TRACE · ROUND 1

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

claude-opus-5 · 20260727-opus5-design-full · 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,get_state,finish_and_test,best_result,style_best_ride,demolish,screenshot,undo_piece"}
    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. Loading tools and planning a layout with two vertical loops.

  6. ToolSearch
    {"max_results":12,"query":"select:mcp__coaster__new_ride,mcp__coaster__place_pieces,mcp__coaster__get_state,mcp__coaster__valid_next_pieces,mcp__coaster__finish_and_test,mcp__coaster__best_result,mcp__coaster__style_best_ride,mcp__coaster__demolish,mcp__coaster__undo_piece,mcp__coaster__screenshot"}
  7. new_ride
    {"dir":2,"ride_type":51,"x":32,"y":30}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":32,"y":30,"z":112},"ride_id":0}
  8. place_pieces
    {"pieces":["begin_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_to_down_25","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":59,"y":30,"z":240},"placed_this_call":27,"total_placed":27}
  9. place_pieces
    {"pieces":["right_vertical_loop","down_25_to_flat","flat_to_left_bank","banked_left_turn_5","banked_left_turn_5","left_bank_to_flat","left_vertical_loop","down_25_to_flat","right_corkscrew_down","left_turn_3","s_bend_left"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":59,"y":30,"z":240},"placed_this_call":0,"rejection":{"error":"piece enters at 25-up slope but the track here is flat; add a slope transition piece first","index":0,"piece":"right_vertical_loop"},"total_placed":27}
  10. place_pieces
    {"pieces":["flat_to_up_25","right_vertical_loop","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":63,"y":29,"z":240},"placed_this_call":3,"total_placed":30}
  11. place_pieces
    {"pieces":["flat_to_left_bank","banked_left_turn_5","banked_left_turn_5","left_bank_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","right_corkscrew_down","left_turn_3","s_bend_left"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":58,"y":33,"z":240},"placed_this_call":7,"rejection":{"error":"piece enters inverted but the track here is unbanked; add a banking transition piece first","index":7,"piece":"right_corkscrew_down"},"total_placed":37}
  12. place_pieces
    {"pieces":["flat_to_down_25","down_25","down_25","down_25","down_25","down_25_to_flat","right_corkscrew_up","left_corkscrew_down","s_bend_left"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":46,"y":35,"z":160},"placed_this_call":9,"total_placed":46}
  13. place_pieces
    {"pieces":["flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat","flat",{"speed":13,"t":"brakes"},{"speed":13,"t":"brakes"},{"speed":13,"t":"brakes"},{"speed":13,"t":"brakes"},{"speed":13,"t":"brakes"},"flat_to_left_bank","banked_left_turn_5","banked_left_turn_5","left_bank_to_flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":32,"y":30,"z":112},"placed_this_call":19,"total_placed":65}

  14. Circuit closed. Testing to bank a score.

  15. finish_and_test
    {"bounds":{"max_tile_x":66,"max_tile_y":36,"max_z":408,"min_tile_x":28,"min_tile_y":29,"min_z":112},"placed_pieces":["begin_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_to_down_25","down_25_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_left_bank","banked_left_turn_5","banked_left_turn_5","left_bank_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25_to_flat","right_corkscrew_up","left_corkscrew_down","s_bend_left","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat_to_down_25","down_25","down_2… (2208 chars)
  16. finish_and_test
    {"ticks":60000}
    {"bounds":{"max_tile_x":66,"max_tile_y":36,"max_z":408,"min_tile_x":28,"min_tile_y":29,"min_z":112},"placed_pieces":["begin_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_to_down_25","down_25_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_left_bank","banked_left_turn_5","banked_left_turn_5","left_bank_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25_to_flat","right_corkscrew_up","left_corkscrew_down","s_bend_left","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat_to_down_25","down_25","down_2… (2209 chars)
  17. screenshot
    [image]
  18. finish_and_test
    {"ticks":120000}
    {"bounds":{"max_tile_x":66,"max_tile_y":36,"max_z":408,"min_tile_x":28,"min_tile_y":29,"min_z":112},"placed_pieces":["begin_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_to_down_25","down_25_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_left_bank","banked_left_turn_5","banked_left_turn_5","left_bank_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25_to_flat","right_corkscrew_up","left_corkscrew_down","s_bend_left","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat_to_down_25","down_25","down_2… (2209 chars)
  19. screenshot
    [image]

  20. The train stalls in the loops — they crest above the lift top. Rebuilding with a full drop to ground level before the inversions.

  21. demolish
    {"demolished":0}
  22. new_ride
    {"dir":2,"ride_type":51,"x":30,"y":30}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":30,"y":30,"z":112},"ride_id":0}
  23. place_pieces
    {"pieces":["begin_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_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_left_bank","banked_left_turn_5","banked_left_turn_5","left_bank_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","right_corkscrew_up","left_corkscrew_down"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":54,"y":36,"z":128},"placed_this_call":40,"total_placed":40}
  24. 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_left","flat_to_up_25","up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat","flat",{"speed":13,"t":"brakes"},{"speed":13,"t":"brakes"},{"speed":13,"t":"brakes"},{"speed":13,"t":"brakes"},{"speed":13,"t":"brakes"},"flat_to_left_bank","banked_left_turn_5","banked_left_turn_5","left_bank_to_flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":30,"y":30,"z":112},"placed_this_call":27,"total_placed":67}
  25. finish_and_test
    {"bounds":{"max_tile_x":65,"max_tile_y":36,"max_z":408,"min_tile_x":26,"min_tile_y":29,"min_z":112},"placed_pieces":["begin_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_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_left_bank","banked_left_turn_5","banked_left_turn_5","left_bank_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","right_corkscrew_up","left_corkscrew_down","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","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","flat_to… (2248 chars)

  26. Banked **6.24 excitement**. Now improving — lateral G of 3.0 is inflating intensity. Rebuilding with an ascending turnaround and a helix finish.

  27. demolish
    {"demolished":0}
  28. new_ride
    {"dir":2,"ride_type":51,"x":30,"y":30}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":30,"y":30,"z":112},"ride_id":0}
  29. place_pieces
    {"pieces":["begin_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_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_up_25","left_turn_3_up_25","left_turn_3_up_25","up_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":61,"y":32,"z":208},"placed_this_call":35,"total_placed":35}
  30. place_pieces
    {"pieces":["s_bend_right","flat_to_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","left_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat_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",{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},"flat_to_left_bank","left_helix_down_large","left_bank_to_flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":30,"y":30,"z":112},"placed_this_call":31,"total_placed":66}
  31. finish_and_test
    {"bounds":{"max_tile_x":64,"max_tile_y":35,"max_z":408,"min_tile_x":26,"min_tile_y":29,"min_z":112},"placed_pieces":["begin_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_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_up_25","left_turn_3_up_25","left_turn_3_up_25","up_25_to_flat","s_bend_right","flat_to_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","left_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat_to_down_25","down_25_to_flat","flat_to_up_25","up… (2265 chars)
  32. demolish
    {"demolished":0}
  33. new_ride
    {"dir":2,"ride_type":51,"x":37,"y":30}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":37,"y":30,"z":112},"ride_id":0}
  34. place_pieces
    {"pieces":["begin_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_to_down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_up_25","left_turn_5_up_25","left_turn_5_up_25","up_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":70,"y":34,"z":288},"placed_this_call":37,"total_placed":37}
  35. place_pieces
    {"pieces":["flat_to_down_25","down_25_to_down_60","down_60","down_60_to_down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","flat_to_up_25","up_25","up_25","up_25_to_flat","right_corkscrew_up","left_corkscrew_down","s_bend_left","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_down_25","down_25_to_flat",{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},"flat_to_left_bank","left_helix_down_large","left_bank_to_flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":37,"y":30,"z":112},"placed_this_call":33,"total_placed":70}
  36. finish_and_test
    {"bounds":{"max_tile_x":74,"max_tile_y":36,"max_z":408,"min_tile_x":33,"min_tile_y":29,"min_z":112},"placed_pieces":["begin_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_to_down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_up_25","left_turn_5_up_25","left_turn_5_up_25","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","left_vertical_loop","down_25_to_flat","flat_to_up_25","up_25","up_25","up_25_to_flat","right_corkscrew_up","left_corkscrew_down","s_bend_left","flat_to_down_25","down… (2300 chars)

  37. Intensity down to 6.94 with headroom. Extending the layout with two more inversions and more airtime.

  38. demolish
    {"demolished":0}
  39. new_ride
    {"dir":2,"ride_type":51,"x":37,"y":30}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":37,"y":30,"z":112},"ride_id":0}
  40. place_pieces
    {"pieces":["begin_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_to_down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_up_25","left_turn_5_up_25","left_turn_5_up_25","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","left_vertical_loop","down_25_to_flat","flat_to_up_25","up_25","up_25","up_25_to_flat","right_corkscrew_up","left_corkscrew_down"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":54,"y":36,"z":192},"placed_this_call":51,"total_placed":51}
  41. place_pieces
    {"pieces":["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_to_flat","left_corkscrew_up","right_corkscrew_down","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_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat",{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},"flat_to_left_bank","banked_left_turn_3","banked_left_turn_3","left_bank_to_flat","flat_to_down_25","down_25_to_flat",{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"}]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":37,"y":30,"z":112},"placed_this_call":41,"total_placed":92}
  42. finish_and_test
    {"bounds":{"max_tile_x":74,"max_tile_y":36,"max_z":408,"min_tile_x":24,"min_tile_y":29,"min_z":112},"placed_pieces":["begin_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_to_down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_up_25","left_turn_5_up_25","left_turn_5_up_25","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","left_vertical_loop","down_25_to_flat","flat_to_up_25","up_25","up_25","up_25_to_flat","right_corkscrew_up","left_corkscrew_down","flat_to_down_25","down_25","down_25"… (2735 chars)
  43. demolish
    {"demolished":0}
  44. new_ride
    {"dir":2,"ride_type":51,"x":37,"y":30}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":37,"y":30,"z":112},"ride_id":0}
  45. place_pieces
    {"pieces":["begin_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"},{"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","down_25","down_25_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_up_25","left_turn_5_up_25","left_turn_5_up_25","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","left_vertical_loop","down_25_to_flat","flat_to_up_25","up_25","up_25","up_25_to_flat","right_corkscrew_up","left_corkscrew_down"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":59,"y":36,"z":192},"placed_this_call":56,"total_placed":56}
  46. place_pieces
    {"pieces":["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_to_flat","left_corkscrew_up","right_corkscrew_down","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_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat",{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},"flat_to_left_bank","banked_left_turn_3","banked_left_turn_3","left_bank_to_flat","flat_to_down_25","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":34,"y":30,"z":112},"placed_this_call":33,"total_placed":89}
  47. place_pieces
    {"pieces":[{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"}]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":37,"y":30,"z":112},"placed_this_call":3,"total_placed":92}
  48. finish_and_test
    {"bounds":{"max_tile_x":79,"max_tile_y":36,"max_z":472,"min_tile_x":29,"min_tile_y":29,"min_z":112},"placed_pieces":["begin_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"},{"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","down_25","down_25_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_up_25","left_turn_5_up_25","left_turn_5_up_25","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","left_vertical_loop","down_25_to_flat","flat_to_u… (2737 chars)

  49. Intensity 10.49 tripped the penalty (raw excitement ≈9.9!). Dialing the lift back to land just under 10.

  50. demolish
    {"demolished":0}
  51. new_ride
    {"dir":2,"ride_type":51,"x":37,"y":30}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":37,"y":30,"z":112},"ride_id":0}
  52. place_pieces
    {"pieces":["begin_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"},{"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","down_25","down_25_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_up_25","left_turn_5_up_25","left_turn_5_up_25","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","left_vertical_loop","down_25_to_flat","flat_to_up_25","up_25","up_25","up_25_to_flat","right_corkscrew_up","left_corkscrew_down","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_up_2… (1701 chars)
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":33,"y":30,"z":112},"placed_this_call":88,"total_placed":88}
  53. place_pieces
    {"pieces":[{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"}]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":37,"y":30,"z":112},"placed_this_call":4,"total_placed":92}
  54. finish_and_test
    {"bounds":{"max_tile_x":78,"max_tile_y":36,"max_z":440,"min_tile_x":28,"min_tile_y":29,"min_z":112},"placed_pieces":["begin_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"},{"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","down_25","down_25_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_up_25","left_turn_5_up_25","left_turn_5_up_25","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","left_vertical_loop","down_25_to_flat","flat_to_up_25","up_25","up_25","up_25_to_flat","right… (2717 chars)
  55. best_result
    {"bounds":{"max_tile_x":78,"max_tile_y":36,"max_z":440,"min_tile_x":28,"min_tile_y":29,"min_z":112},"placed_pieces":["begin_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"},{"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","down_25","down_25_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_up_25","left_turn_5_up_25","left_turn_5_up_25","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","left_vertical_loop","down_25_to_flat","flat_to_up_25","up_25","up_25","up_25_to_flat","right… (2717 chars)
  56. style_best_ride
    {"name":"Serpent's Reckoning","rail_color":"bright_yellow","support_color":"icy_blue","track_color":"bright_purple"}
    {"presentation":{"name":"Serpent's Reckoning","rail_color":"bright_yellow","support_color":"icy_blue","track_color":"bright_purple"},"score":6.559999942779541,"score_changed":false,"styled":"best_result"}

  57. **Serpent's Reckoning** — excitement **6.56** (intensity 9.98, nausea 5.83), banked and styled. 92 pieces: a 304-unit chain lift into a 60° plunge, vertical loop, a climbing 180° banked turnaround into a second big drop, a second vertical loop, then two corkscrew inversion pairs separated by camelback airtime hills, finishing on a tight banked U-turn and brake run. 4 inversions, 10 drops, 80 ticks of air time, similarity to stock designs only 0.42 (no penalty). Iterations along the way: the first two attempts stalled trains in over-tall loops and then over-cooked intensity to 13.9 (excitement 1.87); a taller-lift variant hit intensity 10.49 and got halved to 4.98, so the winner is deliberately tuned to sit just under the 10.0 intensity cliff.

← claude-opus-5 · 20260727-opus5-design-full · all runs