I've built a web that takes your Steam game library and generates a 3D city from it. Games become buildings, playtime determines height. So your most-played game is a massive tower and that game you impulse-bought during a sale and never touched is basically a parking garage.
There's also a world view where every player's library is a building on a shared map. About 7k people on it right now, you can fly around the whole thing.
You can try this on https://thesteamcity.com
Built with Next.js, React Three Fiber, and Supabase. Works on mobile too.
Hope you like it!