Where to start with the game prototypes
Start with the 3D Stripe City designed by Opus, explore Mark’s photo-based 3D pub, then visit Casino’s Stripe Worlds shopping square. The fair now has 30 mini-games, including Gunnhilder’s new business stand. The photo-based Cheeky Pint is a separate walkable pub and business simulator.
| Place | Made by | What to expect |
|---|---|---|
| Stripe City (3d world designed by Opus) | Claude Opus 5.5 | A detailed waterfront, eight characters to choose from, trams, cats and twelve landmarks to light. Use arrows or WASD; Map offers direct travel. |
| Mark’s 3D pub — Cheeky Pint | Claude Opus 5.5 | Explore the pub or Run the pub in the same recreated room. Currently solo. |
| Casino’s Stripe Worlds | Claude Opus 5.5 | A colourful shopping square with customer storefronts. Ask Node for a gift, follow its shop visits, compare demo goods and collect favourites. Node is scripted; no real AI or purchases. |
| Stripe City, canal edition | Codex, GPT-6.1 Solve | A smaller isometric city with bridges, company landmarks and game doors. Use arrows or WASD; Games opens the directory. |
| Small Batch — Gunnhilder’s business | Claude Opus 5.5 | Start with 300 simulated cash, choose a product and logo, manufacture stock and grow a workshop. Also a stand in the original funfair. |
| The original funfair | Codex shared launcher | The simplest route to every game. Choose Game list, select a game, then Play. |
Meet a friend in Stripe City
Choose your character, then Begin walking joins the public world. Choose Play alone to stay solo. In Meet players, invite someone to the current public world or create a separate invitation world and share its link. Anyone with that link can join; each world currently allows eight connections, including you.
Other Opus mini-games
Parcel Sprint: steer through a merchant street, grab perks, meet customers and patch or dodge bugs. Cheeky Pint, mini-game edition: walk around your pub, inspect individual orders and pint levels, and ask customers what makes them happy or unhappy. Their original Codex prototypes remain credited in the build history.
If you have ten minutes
- Spend a few minutes in Claude’s city. Use Map to visit a landmark, then Light it. You can try the environment without walking everywhere.
- Try one short skill game: Skyline Stack for timing and balance, or Storefront Cipher for deduction.
- Try Run the pub in the photo-based Cheeky Pint. Set prices, hire staff and see how customers respond.
- Read What makes a good short game? before deciding which prototypes deserve more work.
Research and playable games are different
The research report contains 200 original proposals, browsable by genre, format, pace and proposed players, with mechanics, risks, references and the original 25-game shortlist. Scores are design judgments, not measured player enjoyment. Those 25 were built; five later additions bring the collection to 30.
Play the mini-games in the fair, use either city’s directory, or open the direct links above. Every game can also run on its own page.
The five later additions
- Small Batch — Gunnhilder’s business — Claude Opus 5.5. Choose a product and logo, manufacture stock over three days and grow a workshop with simulated cash.
- Open for Business — Codex. A continuous shop simulation with live charts and decisions whenever you choose.
- Cheeky Pint — original Codex prototype, now rebuilt in 3D by Claude Opus 5.5. Pint prices, staff, advertising and furniture affect a continuous pub.
- The Slow Boat — Claude. A separate, more detailed pub with stock paid upfront and delivered exactly 21 simulated days later.
- Beat the Agent Seller — Codex implementation, genuine Claude replies. Its AI connection is available in the local preview only; the hosted page explains this limit.
These prototypes have functional and browser checks. They have not been validated as fun by human playtesting. All money, customers, posts and discounts are fictional or simulated. There are no real purchases or prizes.