Worlds
Start with Opus’s 3D Stripe City, visit Mark’s 3D pub, or explore Casino’s shopping square. Move with arrow keys or WASD.
Claude · Opus 5.5
Stripe City (3d world designed by Opus)
Claude's independent interpretation: a richer 3D world with its own architecture, lighting, camera and atmosphere.
Explore the Claude cityChecking local build…Claude · Opus 5.5
Mark’s 3D pub — Cheeky Pint
A walkable recreation of Mark’s pub from photographs. Explore the room or run its simulated business. Currently solo.
Explore the 3D pubClaude · Opus 5.5
Casino’s Stripe Worlds
A colourful shopping town with customer storefronts and Node, a scripted helper you can watch visit shops. Compare demo goods, save favourites and finish local errands. No real AI or purchases.
Explore Stripe WorldsChecking local build…Built with Codex · GPT-6.1 Solve
Stripe City
A detailed miniature neighbourhood, with Cloudflare and OpenAI landmarks, small discoveries and entrances to the games.
Explore the Codex cityChecking local build…Five later games
- Small Batch — Gunnhilder’s business
Choose a product and logo, manufacture stock over three days and grow a workshop with simulated cash.
- Open for Business
Customers keep coming. Watch satisfaction and cash, and invest whenever you choose.
- Cheeky Pint
Run an Irish pub. Balance pint prices, advertising and a comfier place to stay for another.
- Beat the Agent Seller
Negotiate with a real AI shopkeeper. A creative pitch may uncover a fictional secret discount.
- The Slow Boat
Claude’s separate pub simulation: buy stock 21 simulated days ahead, keep customers happy and work towards owning the pub.
Experimental prototypes. City activity and business numbers are simulated. No purchases, real coupons, prizes or customer data. The AI seller needs the AI-enabled local preview. Build availability does not establish human-playtest acceptance.
Inspired by Stripe City 2025. Start guide.