One prompt, five models: Cloudline
A cozy tram game between floating islands, from one long prompt. YouWare gave it to GPT-6 Astra and to an early Gemini 4 checkpoint on Arena and published both games. We gave the exact same words to the models you can use today: Claude Sonnet 5.5, GPT-6.1 Sol and Gemini 3.8 Flash. Play all five and judge for yourself.
The tidier game: clean route map, station doors, a workshop tab and a night mode.
The more beautiful world: golden-hour light, autopilot, a front-seat camera and Oliver's Cloudworks island.
Our run of the identical prompt. The most alive: townsfolk board the tram (0, 9, then 14 aboard), a warm dusk, and a tram that pulls away slowly like a real one. Press Start the journey.
Our run of the identical prompt. Starry night, a long bridge over the clouds, crosswinds on the comfort meter and a Cloudworks upgrade. One bug: the station sign is mirrored.
Our run of the identical prompt on the best Gemini you can use today. It works, but the camera drives through the trees.
The exact prompts are for Ruocco Academy members. The Academy is not open yet: join the waiting list and you get one email when it opens. The demos on this page are free to use for everyone.
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