built a multiplayer AI debate app where two people join a room via a 6-char code, each gets an AI advocate arguing their side, and a judge AI delivers the final verdict
stack: vanilla HTML/CSS/JS + Firebase for real-time multiplayer + supports Claude, Gemini & OpenAI (bring your own key)
biggest challenge was syncing both players in real time and making sure the judge only fires after both arguments are submitted
it’s live and open source 👇
mucksuck-oss.github.io/debate-arena