Show HN: Built a spaceship endless runner in 7 days using AI tools

I wanted to push myself to build something fun, fast, and playable entirely in the browser. I’m not a traditional game dev, but I’ve been experimenting with AI tools like Cursor (AI-powered IDE) and figured it might be possible to go from zero to playable in a week.

Ended up creating a 3D endless spaceship runner - you fly through space dodging UFOs and their laser beams. I used Three.js for the environment and leaned heavily on AI (mostly Cursor + ChatGPT) for scripting logic, fixing weird bugs, and optimizing gameplay feel.

I didn’t plan much. Just opened the IDE, started describing what I wanted to build to the AI, and kept iterating on what felt fun. The UFO obstacle behavior was surprisingly hard to tune without it getting too unfair. AI helped a ton with tweaking that.

The game runs in-browser with no downloads. I know it's rough around the edges, but shipping it in 7 days taught me more about building games (and about AI dev tooling) than anything else I’ve done recently.