RollerCoaster Tycoon
Three browser versions of RollerCoaster Tycoon 2, with a brief covering track building, ride testing and paying guests.
- Opus 5.5
- Fable 5.1
- GPT-6 Astra
Built by Pat
Things I built with AI.
I test AI models by building things. Open each model’s version, copy the exact prompt, or watch the test.
12 builds · Game
Clone Mario Kart
A playable browser clone of Rainbow Road using Mario Kart 8's drift and item mechanics.
- Grok 4.7
- Fable 5.1
- GPT-6 Astra
A playable Nuketown
A browser shooter test on Nuketown, with GPT-6 Astra and Fable 5.1 building the same map.
- GPT-6 Astra
- Fable 5.1
Six karts. Three laps.
Fable 5.1, GPT-6 Astra and GPT-5.6 Sol built browser kart racers from the same prompt.
- GPT-6 Astra
- GPT-5.6 Sol
- Fable 5.1
Game development
A playable browser game of their choosing, with the obvious genres ruled out.
- Fable 5.1
- Fable 5
- Opus 5
Game development
A playable browser game of their choosing.
- Opus 5
- Opus 4.8
- Fable 5
Physics-driven game
A playable Odyssey game: blind the Cyclops, then escape under the rams.
- Kimi K3
- Fable 5
- GPT-5.6 Sol
Archery game (axes)
The second heavy build was a playable archery game: draw a real force-draw curve, loose one arrow, and thread it through twelve aligned axe-heads, with swept collision so the fast arrow can't tunnel through the rings. Every bit of it built procedurally in code.
- GLM 5.2
- Kimi K3
Street Fighter-style 2D fighting game
From “Kimi K3 Is Here! (Better Than Opus 4.8?)”
- GPT-5.6 Sol
- Opus 4.8
- Kimi K2.7
- Kimi K3
- GLM 5.2
Counter-Strike 2 clone (Kimi comparison)
From “Kimi K3 Is Here! (Better Than Opus 4.8?)”
- GPT-5.6 Sol
- Opus 4.8
- Kimi K3
- Fable 5
Counter-Strike 2 clone (Sol comparison)
From “GPT 5.6 Sol: No-Hype Full Review & Testing”
- Fable 5
- Opus 4.8
- GPT-5.6 Sol
- GPT-5.5
Text-adventure dungeon
From “GPT 5.6 Sol: No-Hype Full Review & Testing”
- Fable 5
- Opus 4.8
- GPT-5.6 Sol
- GPT-5.5