San Francisco: The Game
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About San Francisco: The Game
San Francisco rebuilt from map data. Climb buildings, take cars, run into other players.
A recreation of real San Francisco you can explore freely. Walk, climb buildings, take cars, or ride a hang glider over the hills. Type any address or coordinates into 'Go anywhere' or click the minimap to teleport.
There's no score and no mission list: it is a sandbox. Players asked for, and got, opt-in multiplayer with chat, avatar colors and shareable location links.
How San Francisco: The Game was made with AI
Simonian, a Stanford computer science student, built it with GPT-5.6 Sol in OpenAI Codex and posted a demo on 24 August 2026 that passed 930,000 views. The city geometry comes from Apple Maps data. IBM Think and Hoodline both covered it, and it hit the Hacker News front page.
Made by Thijs Simonian (@cdngdev).
How to play
Press Play here to load San Francisco: The Game directly inside this page, or open it in a new tab for dedicated window focus. Use a desktop computer with a keyboard and mouse for the most responsive control. Online multiplayer matchmaking is active.
| WASD | Move |
|---|---|
| Mouse | Look |
| Space | Jump |
| Shift | Run / exit vehicle |
| C | Camera |
| H | Glider |
| V | Vehicle |
Quick facts
- 15,913 miles walked in the first two days, per the creator
- Built on Three.js
Questions about San Francisco: The Game
Is San Francisco: The Game an official GTA?
No. It is a recreation of real San Francisco built by Stanford student Thijs Simonian with GPT-5.6 Sol in OpenAI Codex, on Three.js. There is no score and no mission list: it is a sandbox.
How do I get around?
Walk, climb buildings, take cars, or ride a hang glider over the hills. Type any address or coordinates into 'Go anywhere' or click the minimap to teleport.
Can I play with friends?
Yes: players asked for, and got, opt-in multiplayer with chat, avatar colors and shareable location links.
Tips for San Francisco: The Game
- Use the hang glider (H) for the classic shot over the hills; V takes any vehicle you find.
- Shareable location links make it a great way to show someone a real address in 3D.
Sources: ibm.com, hoodline.com. Last checked .
