
Double Down
Wager on every answer. Double down when you know it.
Three questions against three bots. Runs entirely in your browser.
Double Down Trivia
Real-time trivia where every answer is a bet.
Up to eight friends join a private room with a five-letter code, type their answers, and wager 1 to 10 points on each one. Right answers win the wager, wrong ones lose it, and the board remembers who called it. Play a sample round right here.
- Taps feel instant. useOptimistic and transitions show your wager and answer the moment you lock in, while the server confirms in the background.
- Scores never race. Cloud Functions settle each round inside a Firestore transaction, so eight players locking in the same second still add up.
- Typos still count. Levenshtein matching allows one typo on short answers and two on long ones, but numbers must be exact. Misses can get a second look from an AI grader, and the host can overrule either.
- Games survive bad Wi-Fi. Dropped writes retry with exponential backoff, and the round reveals on its own if a phone goes quiet.
Built with Next.js, React 19, TypeScript, Firestore, Cloud Functions





