TRACE · ROUND 1

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

claude-opus-5 · 20260725-opus5-blind · round 1 back to model →
events
57
tool calls
49
rejected
0
session
0:00
Session trace

  1. I'll start by loading the coaster tools.

  2. ToolSearch
    {"max_results":15,"query":"select:new_ride,place_piece,place_pieces,valid_next_pieces,piece_geometry,finish_and_test,get_state,undo_piece,best_result,demolish,screenshot"}
    No matching deferred tools found
  3. ToolSearch
    {"max_results":20,"query":"coaster roller ride track piece"}
  4. piece_geometry
    {"dir":0}
    {"deltas":[{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":0,"piece":"flat","slope_out":0},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":0,"piece":"end_station","slope_out":0},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":0,"piece":"begin_station","slope_out":0},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":0,"piece":"middle_station","slope_out":0},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":16,"piece":"up_25","slope_out":2},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":64,"piece":"up_60","slope_out":4},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":8,"piece":"flat_to_up_25","slope_out":2},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":32,"piece":"up_25_to_up_60","slope_out":4},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":32,"piece":"up_60_to_up_25","slope_out":2},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":8,"piece":"up_25_to_flat","slope_out":0},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":-16,"piece":"down_25","slope_out":6},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":-64,"piece":"down_60","slope_out":8},{"bank_out":0,"dir_out":0,"dx… (7397 chars)
  5. new_ride
    {"dir":0,"ride_type":51,"x":60,"y":60}
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"ride_id":0}
  6. place_pieces
    {"pieces":["begin_station","middle_station","middle_station","middle_station","end_station",{"chain":true,"piece":"flat_to_up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25_to_flat"}]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":46,"y":60,"z":240},"placed_this_call":14,"total_placed":14}
  7. place_pieces
    {"pieces":["flat_to_down_25","down_25","down_25_to_down_60","down_60_to_down_25","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":41,"y":60,"z":144},"placed_this_call":5,"total_placed":19}
  8. valid_next_pieces
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":41,"y":60,"z":144},"valid_pieces":["flat","end_station","begin_station","middle_station","flat_to_up_25","flat_to_down_25","left_turn_5","right_turn_5","flat_to_left_bank","flat_to_right_bank","s_bend_left","s_bend_right","left_turn_3","right_turn_3","left_corkscrew_up","right_corkscrew_up","flat_to_up_60","flat_to_down_60","brakes","booster"]}
  9. undo_piece
    {"cursor":{"bank":0,"dir":0,"slope":6,"x":42,"y":60,"z":152},"pieces_placed":18,"removed":"down_25_to_flat"}
  10. place_pieces
    {"pieces":["down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":6,"x":37,"y":59,"z":136},"placed_this_call":4,"total_placed":22}
  11. place_pieces
    {"pieces":["down_25_to_flat","flat","left_corkscrew_up","left_corkscrew_down"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":36,"y":56,"z":128},"placed_this_call":4,"total_placed":26}
  12. place_pieces
    {"pieces":["flat_to_up_25","left_vertical_loop","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":57,"z":128},"placed_this_call":3,"total_placed":29}
  13. place_pieces
    {"pieces":["flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":52,"y":56,"z":112},"placed_this_call":10,"total_placed":39}
  14. place_pieces
    {"pieces":["flat_to_up_25","left_vertical_loop","down_25_to_flat","s_bend_right","s_bend_right","brakes"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":63,"y":55,"z":112},"placed_this_call":6,"total_placed":45}
  15. place_pieces
    {"pieces":["left_turn_5","left_turn_5","brakes","brakes"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"placed_this_call":4,"total_placed":49}

  16. Circuit closed. Banking a score now.

  17. finish_and_test
    {"bounds":{"max_tile_x":65,"max_tile_y":60,"max_z":296,"min_tile_x":34,"min_tile_y":55,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_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_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","flat","left_corkscrew_up","left_corkscrew_down","flat_to_up_25","left_vertical_loop","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","s_bend_right","s_bend_right","brakes","left_turn_5","left_turn_5","brakes","brakes"],"program":null,"rides":[{"average_speed":403115489,"crashed":false,"excitement":null,"highest_drop":14,"id":0,"intensity":null,"max_lateral_g":0.0,"max_negative_g":-0.9100000262260437,… (1653 chars)
  18. finish_and_test
    {"ticks":60000}
    {"bounds":{"max_tile_x":65,"max_tile_y":60,"max_z":296,"min_tile_x":34,"min_tile_y":55,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_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_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","flat","left_corkscrew_up","left_corkscrew_down","flat_to_up_25","left_vertical_loop","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","s_bend_right","s_bend_right","brakes","left_turn_5","left_turn_5","brakes","brakes"],"program":null,"rides":[{"average_speed":1385991223,"crashed":false,"excitement":null,"highest_drop":14,"id":0,"intensity":null,"max_lateral_g":0.0,"max_negative_g":-0.9100000262260437… (1656 chars)
  19. finish_and_test
    {"ticks":6000}
    {"bounds":{"max_tile_x":65,"max_tile_y":60,"max_z":296,"min_tile_x":34,"min_tile_y":55,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_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_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","flat","left_corkscrew_up","left_corkscrew_down","flat_to_up_25","left_vertical_loop","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","s_bend_right","s_bend_right","brakes","left_turn_5","left_turn_5","brakes","brakes"],"program":null,"rides":[{"average_speed":1484257965,"crashed":false,"excitement":null,"highest_drop":14,"id":0,"intensity":null,"max_lateral_g":0.0,"max_negative_g":-0.9100000262260437… (1656 chars)
  20. screenshot
    [image]

  21. Train stalled on the first loop (lift was too short). Rebuilding taller.

  22. demolish
    {"demolished":0}
  23. new_ride
    {"dir":0,"ride_type":51,"x":60,"y":60}
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"ride_id":0}
  24. place_pieces
    {"pieces":["begin_station","middle_station","middle_station","middle_station","end_station",{"chain":true,"piece":"flat_to_up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25_to_flat"}]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":39,"y":60,"z":352},"placed_this_call":21,"total_placed":21}
  25. place_pieces
    {"pieces":["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","left_vertical_loop","down_25_to_flat","left_corkscrew_up","left_corkscrew_down"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":28,"y":56,"z":112},"placed_this_call":13,"total_placed":34}
  26. place_pieces
    {"pieces":["flat_to_up_25","left_vertical_loop","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_right","flat_to_up_25","up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","s_bend_left","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_right","flat","brakes","brakes","left_turn_5","left_turn_5","brakes","brakes"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"placed_this_call":30,"total_placed":64}
  27. finish_and_test
    {"bounds":{"max_tile_x":65,"max_tile_y":60,"max_z":376,"min_tile_x":26,"min_tile_y":55,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_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"},{"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","down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","left_corkscrew_up","left_corkscrew_down","flat_to_up_25","left_vertical_loop","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_right","flat_to_up_25","up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","s_bend_left","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right",… (1939 chars)

  28. Banked **6.51 excitement**. Now building a longer, bigger version.

  29. demolish
    {"demolished":0}
  30. new_ride
    {"dir":0,"ride_type":51,"x":60,"y":60}
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"ride_id":0}
  31. place_pieces
    {"pieces":["begin_station","middle_station","middle_station","middle_station","end_station",{"chain":true,"piece":"flat_to_up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25_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"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":30,"y":60,"z":112},"placed_this_call":30,"total_placed":30}
  32. place_pieces
    {"pieces":["flat_to_up_25","left_vertical_loop","down_25_to_flat","right_corkscrew_up","right_corkscrew_down","flat_to_left_bank","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_up_25","left_vertical_loop","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":33,"y":79,"z":112},"placed_this_call":20,"total_placed":50}
  33. place_pieces
    {"pieces":["flat_to_up_25","up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","s_bend_right","flat_to_up_25","up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","s_bend_right","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","flat","flat","flat","flat","right_turn_5","s_bend_left","flat","flat","flat","flat","brakes","brakes","brakes","brakes","right_turn_5","brakes","brakes"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"placed_this_call":36,"total_placed":86}
  34. finish_and_test
    {"bounds":{"max_tile_x":65,"max_tile_y":79,"max_z":408,"min_tile_x":25,"min_tile_y":59,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_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"},{"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","down_60_to_down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","right_corkscrew_up","right_corkscrew_down","flat_to_left_bank","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_up_25","left_vertical_loop","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_up_25","up_25","up… (2299 chars)

  35. Intensity 13.9 killed it. Reverting to the 352 lift height that scored 8.9 intensity, keeping the longer layout.

  36. demolish
    {"demolished":0}
  37. new_ride
    {"dir":0,"ride_type":51,"x":60,"y":60}
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"ride_id":0}
  38. place_pieces
    {"pieces":["begin_station","middle_station","middle_station","middle_station","end_station",{"chain":true,"piece":"flat_to_up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60","down_60_to_down_25","down_25","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":31,"y":60,"z":112},"placed_this_call":29,"total_placed":29}
  39. place_pieces
    {"pieces":["flat_to_up_25","left_vertical_loop","down_25_to_flat","right_corkscrew_up","right_corkscrew_down","flat_to_left_bank","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_up_25","left_vertical_loop","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":34,"y":79,"z":112},"placed_this_call":20,"total_placed":49}
  40. place_pieces
    {"pieces":["flat_to_up_25","up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","s_bend_right","flat_to_up_25","up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","s_bend_right","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","flat","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","flat","flat","brakes","brakes","brakes","brakes","brakes","brakes","right_turn_5","brakes","brakes"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"placed_this_call":38,"total_placed":87}
  41. finish_and_test
    {"bounds":{"max_tile_x":65,"max_tile_y":79,"max_z":376,"min_tile_x":26,"min_tile_y":59,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_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"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","right_corkscrew_up","right_corkscrew_down","flat_to_left_bank","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_up_25","left_vertical_loop","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_up_25","up_25","up_25_to_flat","flat_to_down_25","down_25","do… (2297 chars)

  42. 6.70 banked. Trying one more with a softer drop pullout and sharper airtime hills.

  43. demolish
    {"demolished":0}
  44. new_ride
    {"dir":0,"ride_type":51,"x":60,"y":60}
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"ride_id":0}
  45. place_pieces
    {"pieces":["begin_station","middle_station","middle_station","middle_station","end_station",{"chain":true,"piece":"flat_to_up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":28,"y":60,"z":112},"placed_this_call":32,"total_placed":32}
  46. place_pieces
    {"pieces":["flat_to_up_25","left_vertical_loop","down_25_to_flat","right_corkscrew_up","right_corkscrew_down","flat_to_left_bank","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_up_25","left_vertical_loop","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":31,"y":79,"z":112},"placed_this_call":20,"total_placed":52}
  47. place_pieces
    {"pieces":["flat_to_up_25","up_25_to_up_60","up_60_to_flat","flat_to_down_60","down_60_to_down_25","down_25_to_flat","s_bend_right","flat_to_up_25","up_25_to_up_60","up_60_to_flat","flat_to_down_60","down_60_to_down_25","down_25_to_flat","s_bend_right","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","flat","flat","flat","flat","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","flat","flat","brakes","brakes","brakes","brakes","brakes","brakes","right_turn_5","brakes","brakes"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"placed_this_call":41,"total_placed":93}
  48. finish_and_test
    {"bounds":{"max_tile_x":65,"max_tile_y":79,"max_z":376,"min_tile_x":23,"min_tile_y":59,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_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"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","right_corkscrew_up","right_corkscrew_down","flat_to_left_bank","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_up_25","left_vertical_loop","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_up_25","up_25_to_up_60","up_60_t… (2378 chars)

  49. 6.86 banked. One final attempt: adding a quadruple-corkscrew section for more inversions.

  50. demolish
    {"demolished":0}
  51. new_ride
    {"dir":0,"ride_type":51,"x":60,"y":60}
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"ride_id":0}
  52. place_pieces
    {"pieces":["begin_station","middle_station","middle_station","middle_station","end_station",{"chain":true,"piece":"flat_to_up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","right_corkscrew_up","right_corkscrew_down","flat_to_left_bank","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_up_25","left_vertical_loop","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":31,"y":79,"z":112},"placed_this_call":52,"total_placed":52}
  53. place_pieces
    {"pieces":["flat_to_up_25","up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","s_bend_right","flat_to_up_25","up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","right_corkscrew_up","right_corkscrew_down","left_corkscrew_up","left_corkscrew_down"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":46,"y":72,"z":112},"placed_this_call":17,"total_placed":69}
  54. place_pieces
    {"pieces":["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_to_right_bank","banked_right_turn_5","right_bank_to_flat","brakes","brakes","brakes","brakes","brakes","brakes","right_turn_5","brakes","brakes"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"placed_this_call":28,"total_placed":97}
  55. finish_and_test
    {"bounds":{"max_tile_x":65,"max_tile_y":79,"max_z":376,"min_tile_x":23,"min_tile_y":59,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_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"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","right_corkscrew_up","right_corkscrew_down","flat_to_left_bank","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_up_25","left_vertical_loop","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_up_25","up_25","up_25_to_flat","… (2430 chars)
  56. best_result
    {"bounds":{"max_tile_x":65,"max_tile_y":79,"max_z":376,"min_tile_x":23,"min_tile_y":59,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_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"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","right_corkscrew_up","right_corkscrew_down","flat_to_left_bank","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_up_25","left_vertical_loop","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_up_25","up_25","up_25_to_flat","… (2430 chars)

  57. Best result is banked and it's the current build, so I'll stop here. **Progression this round:** 6.51 → 6.70 → 6.86 → **7.02**, plus one failed experiment (a 384-height lift that spiked intensity to 13.9 and tanked excitement to 2.07) and an initial stall where the lift was too short for the first loop. **Final design — 97 pieces, "big-drop out-and-around":** - 5-tile station at (60,60), 16-piece chain lift to z=352 (30-unit highest drop) - 60° plunge with a long 25° runout to keep the pull-out G at 4.78 - Vertical loop → corkscrew pair → banked sweep south - Airtime hill → second vertical loop → banked sweep east - Two camelbacks, then a **quadruple corkscrew** zigzag (right pair + left pair) that nets 6 tiles sideways - Two more hills, banked turn north, brake run into the station Ratings: excitement **7.02**, intensity 9.89 (just under the cliff), nausea 6.02, 5 inversions, 11 drops, 61 air time, ride length 646. Similarity to the stock library is 0.375, safely under the 0.5 penalty threshold. Summary: a 352-high steel twister with two vertical loops and a quadruple-corkscrew zigzag, scoring **7.02 excitement** at 9.89 intensity.

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