How it works
Nothing important happens in the browser. Timers, grading, and points are decided in one Node process so a lagging 4G phone cannot rewrite the leaderboard.
Create a free organization. We send a one-time code to your email. No card. Up to 10 team users on the free plan.
Add quizzes, pick puzzles from the directory, or generate a 4×4 Sudoku / Zipper. Group them into Welcome, Puzzle, and Final if you like.
A six-character code and a QR appear. Project them. Players type a name — that is the whole onboarding.
Open the lobby, then start the first challenge. A short pre-roll absorbs network jitter so every phone enables at the same instant.
Each person gets one attempt. When time is up — or you lock — the server grades and settles. Classic mode: first correct wins.
Show the key, the this-question board, then Next. Pause if the room needs a breath. End when you are done — results wait on the host screen.