I Built a Real-Time Multiplayer Bingo Engine with...

[BingWow](https://bingwow.com) is a free multiplayer bingo platform. You type a topic, AI generates a card, and up to 20 people play together in the browser. No downloads, no accounts. Teachers use it for classroom review games, event planners use it for baby showers and team building, and watch party hosts use it for live TV events. Here's how the real-time multiplayer works under the hood. ## The Stack - **Next.js 16** (App Router) on Vercel - **Supabase** (PostgreSQL + Auth + Storage) - **Abl