World Cup Prediction Game

A free, open multiplayer prediction game across all 104 matches, with a scoring engine that rescores cleanly when the rules change.

A free, open multiplayer World Cup prediction game. Pick the matches, earn points, climb the board across all 104 games of the tournament. Next.js 16, Tailwind v4, Supabase (Postgres, magic-link auth, row-level security), openfootball data (104 matches seeded), Playfair Display plus Montserrat. Configurable scoring with automatic rescoring, admin result-sync, and a polished branded UI. This public edition is a cloned and adapted version of a private app I originally built for internal use at my workplace. The game is polyglot, playable in several languages.

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