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Language Word Battle

Real-time vocabulary duels with friends.

Beginner10h2–3 people17/20 fit
TL;DR

Build Language Word Battle for language learners in ~10h with 2–3 people. Stack: Socket.IO + Next.js + FSRS.

Why it wins: Social learning game.

Build flow

01 · Problem
Vocabulary practice is lonely.
02 · Solution
Players race to translate words, with power-ups and spaced repetition choosing words each player needs.
03 · Build
  1. 1Build rooms
  2. 2Pick words
  3. 3Score
  4. 4Add power-ups
04 · Demo
Duel with a friend live.

MVP checklist

  • Duels
  • Power-ups
  • Personal word lists
  • Ranks

Tech stack

TechRole
Socket.IORealtime multiplayer
Next.jsFrontend + API routes
FSRSSpaced-repetition scheduler

Reference repos

Open-source projects you can build on. Links checked 2026-10-31.

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