Every grid plays by a stated rule — except for one cell that breaks it. Find the lie. Build your streak.
A puzzle game about deduction. Each case shows you a grid and a claim. Most cells follow the rule. One doesn't. Spot it. Tap it. Move on.
The game introduces rules gradually. By the time you reach case 80, you'll have seen every one of them — and the game might start telling the truth occasionally, just to keep you honest.
Cases 1–10 are handcrafted tutorials. After that, every puzzle is procedurally generated with exactly one verified violation. Difficulty rises gradually with the case number. Grids grow from 3×3 to 5×5. New rules unlock as you progress. Past case 80, the game sometimes tells the truth — and you have to recognize it.
All progress saved on your device. No tracking, no analytics, no internet required.
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