RUN 20260723-showdown (design)

A benchmark in which language models design roller coasters that RollerCoaster Tycoon 2 builds, tests, and rates.

Standings

design mode — models build from scratch

modelscoreintensitynausea similaritybesttokens / cost
1st claude-fable-5 6.59 8.22 4.55 — round 6/6 —
2nd claude-sonnet-5 5.95 7.49 4.12 — round 6/6 —
3rd claude-opus-4-8 5.78 7.28 4.11 — round 3/6 —

score = excitement, scaled down when similarity to a stock library design exceeds 0.5 (an exact or mirrored copy scores 0)

claude-fable-5full detail →
excitementintensity×build failed
0515intensity ceiling 10round 1: excitement 5.70round 2: excitement 6.03round 4: excitement 1.62round 6: excitement 6.596.59round 1: intensity 6.80round 2: intensity 7.91round 4: intensity 15.56round 6: intensity 8.22R1R2×round 3: build failed at piece 91 (91/186 pieces placed): rejected at cursor (x=48, y=25, z=152, dir=0): Wooden Roller Coaster 1 in the wayR3R4round 5: built but not rated (test never completed)R5R6

Round 1

excitement 5.70 intensity 6.80 nausea 4.02 length 497 drops 7 airtime 81 tested ok
track program (92 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "middle_station",
    "end_station",
    "flat",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25_to_flat"
    },
    "flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "s_bend_left",
    "s_bend_right",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "brakes",
    "brakes",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat"
  ],
  "ride_type": 52,
  "start": {
    "dir": 0,
    "x": 60,
    "y": 60
  }
}
park screenshot, claude-fable-5 round 1 view 1

Round 2

excitement 6.03 intensity 7.91 nausea 4.36 length 548 drops 9 airtime 129 tested ok
track program (104 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "middle_station",
    "end_station",
    "flat",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25_to_flat"
    },
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat"
  ],
  "ride_type": 52,
  "start": {
    "dir": 0,
    "x": 60,
    "y": 60
  }
}
park screenshot, claude-fable-5 round 2 view 1

Round 3 build failed

build failed at piece 91 (91/186 pieces placed): rejected at cursor (x=48, y=25, z=152, dir=0): Wooden Roller Coaster 1 in the way

track program (186 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "middle_station",
    "end_station",
    "flat",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25_to_flat"
    },
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "left_turn_3_down_25",
    "right_turn_3_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "right_turn_3_down_25",
    "left_turn_3_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "left_turn_3_down_25",
    "right_turn_3_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat_to_right_bank",
    "banked_right_turn_5",
    "banked_right_turn_5",
    "right_bank_to_flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "right_turn_3_down_25",
    "left_turn_3_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "left_turn_3_down_25",
    "right_turn_3_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat_to_right_bank",
    "banked_right_turn_5",
    "banked_right_turn_5",
    "right_bank_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat",
    "flat"
  ],
  "ride_type": 52,
  "start": {
    "dir": 0,
    "x": 60,
    "y": 60
  }
}
park screenshot, claude-fable-5 round 3 view 1

Round 4

excitement 1.62 intensity 15.56 nausea 9.41 length 1103 drops 9 airtime 133 tested ok
track program (202 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "middle_station",
    "end_station",
    "flat",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25_to_flat"
    },
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "right_turn_3_down_25",
    "left_turn_3_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank",
    "left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "left_turn_3_down_25",
    "right_turn_3_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_right_bank",
    "banked_right_turn_5",
    "right_bank",
    "right_bank",
    "banked_right_turn_5",
    "right_bank_to_flat",
    "flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank",
    "left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_right_bank",
    "banked_right_turn_5",
    "right_bank",
    "right_bank",
    "banked_right_turn_5",
    "right_bank_to_flat",
    "flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank",
    "left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat"
  ],
  "ride_type": 52,
  "start": {
    "dir": 0,
    "x": 54,
    "y": 62
  }
}
park screenshot, claude-fable-5 round 4 view 1

Round 5 not rated

built, but the ride was never rated

track program (210 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "middle_station",
    "end_station",
    "flat",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25_to_flat"
    },
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank",
    "left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat",
    "flat_to_right_bank",
    "banked_right_turn_5",
    "right_bank",
    "right_bank",
    "banked_right_turn_5",
    "right_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank",
    "left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat",
    "flat_to_right_bank",
    "banked_right_turn_5",
    "right_bank",
    "right_bank",
    "banked_right_turn_5",
    "right_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank",
    "left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat"
  ],
  "ride_type": 52,
  "start": {
    "dir": 0,
    "x": 54,
    "y": 62
  }
}
park screenshot, claude-fable-5 round 5 view 1

Round 6

excitement 6.59 intensity 8.22 nausea 4.55 length 1069 drops 10 airtime 157 tested ok
track program (198 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "middle_station",
    "end_station",
    "flat",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25_to_flat"
    },
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60",
    "down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_up_60",
    "up_60_to_up_25",
    "up_25_to_flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat",
    "flat_to_right_bank",
    "banked_right_turn_5",
    "banked_right_turn_5",
    "right_bank_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat",
    "flat_to_right_bank",
    "banked_right_turn_5",
    "banked_right_turn_5",
    "right_bank_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank",
    "left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat",
    "flat"
  ],
  "ride_type": 52,
  "start": {
    "dir": 0,
    "x": 54,
    "y": 62
  }
}
park screenshot, claude-fable-5 round 6 view 1
claude-sonnet-5full detail →
excitementintensity×build failed
0515intensity ceiling 10round 1: excitement 2.45round 2: excitement 5.29round 3: excitement 5.68round 4: excitement 5.72round 5: excitement 5.87round 6: excitement 5.955.95round 1: intensity 3.03round 2: intensity 6.58round 3: intensity 9.42round 4: intensity 7.19round 5: intensity 7.39round 6: intensity 7.49R1R2R3R4R5R6

Round 1

excitement 2.45 intensity 3.03 nausea 1.68 length 275 drops 2 airtime 13 tested ok
track program (50 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "t": "up_25_to_flat"
    },
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "right_turn_5",
    "right_turn_5",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "right_turn_5",
    "right_turn_5"
  ],
  "ride_type": 52,
  "start": {
    "dir": 2,
    "x": 60,
    "y": 60
  }
}
park screenshot, claude-sonnet-5 round 1 view 1

Round 2

excitement 5.29 intensity 6.58 nausea 3.57 length 416 drops 3 airtime 26 tested ok
track program (77 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "t": "up_25_to_flat"
    },
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "s_bend_left",
    "flat_to_right_bank",
    "banked_right_turn_3",
    "right_bank_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_3",
    "left_bank_to_flat",
    "right_turn_5",
    "right_turn_5",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "right_turn_5",
    "flat",
    "flat",
    "flat",
    "flat",
    "right_turn_5"
  ],
  "ride_type": 52,
  "start": {
    "dir": 2,
    "x": 60,
    "y": 60
  }
}
park screenshot, claude-sonnet-5 round 2 view 1

Round 3

excitement 5.68 intensity 9.42 nausea 5.40 length 687 drops 2 airtime 10 tested ok
track program (148 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "s_bend_left",
    "flat_to_right_bank",
    "banked_right_turn_3",
    "right_bank_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_3",
    "left_bank_to_flat",
    "s_bend_right",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "left_turn_1",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "left_turn_1",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "left_turn_1"
  ],
  "ride_type": 52,
  "start": {
    "dir": 2,
    "x": 60,
    "y": 60
  }
}
park screenshot, claude-sonnet-5 round 3 view 1

Round 4

excitement 5.72 intensity 7.19 nausea 3.81 length 685 drops 3 airtime 26 tested ok
track program (148 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "s_bend_left",
    "flat_to_right_bank",
    "banked_right_turn_3",
    "right_bank_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_3",
    "left_bank_to_flat",
    "s_bend_right",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "left_turn_1",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "left_turn_1",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "left_turn_1"
  ],
  "ride_type": 52,
  "start": {
    "dir": 2,
    "x": 60,
    "y": 60
  }
}
park screenshot, claude-sonnet-5 round 4 view 1

Round 5

excitement 5.87 intensity 7.39 nausea 3.97 length 688 drops 5 airtime 33 tested ok
track program (148 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "s_bend_left",
    "flat_to_right_bank",
    "banked_right_turn_3",
    "right_bank_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_3",
    "left_bank_to_flat",
    "s_bend_right",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "left_turn_1",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "left_turn_1",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "left_turn_1"
  ],
  "ride_type": 52,
  "start": {
    "dir": 2,
    "x": 60,
    "y": 60
  }
}
park screenshot, claude-sonnet-5 round 5 view 1

Round 6

excitement 5.95 intensity 7.49 nausea 4.12 length 690 drops 7 airtime 33 tested ok
track program (148 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "s_bend_left",
    "flat_to_right_bank",
    "banked_right_turn_3",
    "right_bank_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_3",
    "left_bank_to_flat",
    "s_bend_right",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "left_turn_1",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "left_turn_1",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "left_turn_1"
  ],
  "ride_type": 52,
  "start": {
    "dir": 2,
    "x": 60,
    "y": 60
  }
}
park screenshot, claude-sonnet-5 round 6 view 1
claude-opus-4-8full detail →
excitementintensity×build failed
0515intensity ceiling 10round 2: excitement 5.51round 3: excitement 5.785.78round 2: intensity 6.86round 3: intensity 7.28round 1: built but not rated (test never completed)R1R2R3×round 4: build failed at piece 51 (51/96 pieces placed): rejected at cursor (x=30, y=42, z=224, dir=0): Wooden Roller Coaster 1 in the wayR4round 5: built but not rated (test never completed)R5round 6: built but not rated (test never completed)R6

Round 1 not rated

built, but the ride was never rated

track program (64 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25_to_flat"
    },
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_left_bank",
    "left_helix_down_small",
    "left_helix_down_small",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "s_bend_left",
    "s_bend_right",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "s_bend_right",
    "s_bend_left",
    "brakes",
    "flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat"
  ],
  "ride_type": 52,
  "start": {
    "dir": 0,
    "x": 60,
    "y": 60
  }
}
park screenshot, claude-opus-4-8 round 1 view 1

Round 2

excitement 5.51 intensity 6.86 nausea 3.83 length 461 drops 6 airtime 70 tested ok
track program (70 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25_to_flat"
    },
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_right_bank",
    "right_helix_down_large",
    "right_helix_down_large",
    "right_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "s_bend_left",
    "s_bend_right",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat"
  ],
  "ride_type": 52,
  "start": {
    "dir": 0,
    "x": 56,
    "y": 60
  }
}
park screenshot, claude-opus-4-8 round 2 view 1

Round 3

excitement 5.78 intensity 7.28 nausea 4.11 length 508 drops 8 airtime 68 tested ok
track program (74 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "up_25_to_flat"
    },
    "flat_to_down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_right_bank",
    "right_helix_down_large",
    "right_helix_down_large",
    "right_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "s_bend_left",
    "s_bend_right",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_60",
    "up_60_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat"
  ],
  "ride_type": 52,
  "start": {
    "dir": 0,
    "x": 56,
    "y": 60
  }
}
park screenshot, claude-opus-4-8 round 3 view 1

Round 4 build failed

build failed at piece 51 (51/96 pieces placed): rejected at cursor (x=30, y=42, z=224, dir=0): Wooden Roller Coaster 1 in the way

track program (96 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25_to_flat"
    },
    "flat_to_right_bank",
    "right_helix_down_large",
    "right_helix_down_large",
    "right_bank_to_flat",
    "flat",
    "flat_to_right_bank",
    "right_helix_down_large",
    "right_helix_down_large",
    "right_bank_to_flat",
    "flat_to_down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_right_bank",
    "right_helix_up_large",
    "right_helix_up_large",
    "right_bank_to_flat",
    "flat",
    "flat_to_right_bank",
    "right_helix_down_large",
    "right_helix_down_large",
    "right_bank_to_flat",
    "flat",
    "flat_to_right_bank",
    "right_helix_up_large",
    "right_helix_up_large",
    "right_bank_to_flat",
    "flat_to_down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "s_bend_left",
    "s_bend_right",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat"
  ],
  "ride_type": 52,
  "start": {
    "dir": 0,
    "x": 58,
    "y": 52
  }
}
park screenshot, claude-opus-4-8 round 4 view 1

Round 5 not rated

built, but the ride was never rated

track program (96 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25_to_flat"
    },
    "flat_to_right_bank",
    "right_helix_down_large",
    "right_helix_down_large",
    "right_bank_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_right_bank",
    "right_helix_down_large",
    "right_helix_down_large",
    "right_bank_to_flat",
    "flat_to_down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_right_bank",
    "right_helix_up_large",
    "right_helix_up_large",
    "right_bank_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_right_bank",
    "right_helix_down_large",
    "right_helix_down_large",
    "right_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "s_bend_left",
    "s_bend_right",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat"
  ],
  "ride_type": 52,
  "start": {
    "dir": 0,
    "x": 58,
    "y": 52
  }
}
park screenshot, claude-opus-4-8 round 5 view 1

Round 6 not rated

built, but the ride was never rated

track program (98 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "left_turn_3_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25_to_flat"
    },
    "flat_to_right_bank",
    "right_helix_down_large",
    "right_helix_down_large",
    "right_bank_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_right_bank",
    "right_helix_down_large",
    "right_helix_down_large",
    "right_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_right_bank",
    "right_helix_up_large",
    "right_helix_up_large",
    "right_bank_to_flat",
    "flat",
    "flat",
    "flat",
    "flat",
    "flat_to_right_bank",
    "right_helix_down_large",
    "right_helix_down_large",
    "right_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "s_bend_left",
    "s_bend_right",
    "flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25",
    "down_25_to_flat"
  ],
  "ride_type": 52,
  "start": {
    "dir": 0,
    "x": 58,
    "y": 52
  }
}
park screenshot, claude-opus-4-8 round 6 view 1

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