Build a multiplayer browser flight sim in hours and sell in-game ads
Pieter Levels, with no game-dev background, prompted Cursor (with Grok and Claude models) to build a Three.js flight simulator in about three hours. Within roughly ten days, sales of ad blimps and paid planes had passed $38,000.
- Difficulty
- Intermediate
- Setup time
- 3 hr
- Monthly cost
- $20/mo
- What it saves
- $38K revenue in ~10 days
Also reported here: avgeekery.com.
How to do it
- Open an empty folder in Cursor and describe a simple 3D flight game in Three.js
- Get one plane flying with basic controls before adding anything else
- Ask the agent to add a lightweight multiplayer server so players see each other
- Ship it on a cheap host and post short clips of it as you build
- Add paid in-game items, such as sponsor billboards or premium planes, once traffic arrives
The prompt
Build a browser-based 3D flight game using Three.js in a single index.html plus one JS file. Give me a plane I can fly with the keyboard (pitch, roll, throttle), a ground plane with simple terrain and a sky. Keep it to vanilla JS with no build step. After that works, add a small Node WebSocket server so multiple players see each other's planes in real time.
Where this comes from
Two or more independent people say it worked. Original report: Indie Hackers.
Tried this? Tell us how it went and help move its proof level up.