A sheet is folded, punched through the stacked layers, and frozen. Tap every cell on the original grid where a hole will appear once it unfolds, then watch the stack open and see what you got right. Built on the Paper Folding Test used in cognitive research since 1976 — no game engine, just React Native and a lot of geometry.
54,000+ deterministic, hand-curated levels across three difficulties.
3D unfold animation built without a game engine.
A daily set: the same four puzzles for everyone, every local midnight.
All-time and weekly global leaderboards, no account required to play.
54,000+
Generated levels
3
Folds at the hardest tier
1976
The test it is built on
