AI Builds 3D Browser Games

Over a period of 2 weeks, I used AI (mostly Cursor + Claude Sonnet 3.7 + ChatGPT o1 Pro) to build two playable browser-based games with Three.js and Nuxt.js. These weren’t polished, long-term projects, they were experiments in rapid prototyping through “vibe coding,” where I gave AI rough ideas and let it generate both the requirements and most of the implementation.

In this 6-minute demo, I’ll show:

- The actual games in action  
  
- The workflow I used with Cursor (messy prompts, generated code, and debugging side-by-side with AI)  
  
- How the AI tackled surprisingly complex problems like 3D scene setup, multiplayer sync, and game state transitions  
  
- What worked, what didn’t, and what it felt like to “co-develop” with an LLM  

I’ll walk through code, hacks, and surprises, all from the perspective of someone trying to build real things, fast, with AI in the driver’s seat.