Hi All, my name is Jay and I just built an Entropy app at entropygame.org. The board game is a favourite at the Mind Sports Olympiad & Sir Demis Hassabis (Nobel Prize winner & CEO of Google Deepmind) is a 5x World Champion.

For those who are not familiar with the game: Entropy is a two-player strategy game played on a 7x7 grid with coloured counters. One player (Chaos) randomly draws and places counters, while the other (Order) tries to slide pieces to create palindromic patterns for points.

I spent the last week building this from scratch. I used Claude-4-Sonnet to help me write 95%+ of the code for this project. It's amazing how much you can get done with these AI models now. Speed of development is crazy.

Currently you can:

- Play anyone online - Send and invite to play someone - Review match history - Get an ELO score

The next major step is to create an Entropy bot so that you can play offline.

I recently came across convex.dev and wanted a project to test it out. Boy was I impressed. Convex makes the app reactive by default, no need to worry about web-sockets or Redis caching. All database schemas and basically any interaction with the database are pure typescript functions so very easy to use.

Next.js for the frontend of course, hosted on Vercel.

All-in-all my new favourite way to develop. I'd love to see examples of larger applications with 10000's+ users using Convex so I have conviction this isn't just for hobbyists. But based on what Theo @ T3.chat is doing it seems like it works really well.