xo toggle: block flip

XO Toggle is a minimalist logic puzzle built on one simple twist: every block you place flips the cells it covers between X and O.

■ How to play • Drop blocks onto the grid — covered cells flip between X and O. • Use every block so the grid matches the target shape shown above. • Order and position both matter. Plan each move carefully.

■ Features • Hundreds of puzzles, procedurally generated per level — always fresh • Smooth difficulty ramp: more blocks and rotations as you progress • Stuck? Use a hint to reveal one piece of the solution • Auto-save — close the app and pick up exactly where you left off • Korean and English supported • Portrait, one-hand friendly • Works offline

■ Great for • A quick mental reset on the train or between meetings • Players who prefer spatial puzzles over word or number games • Anyone who likes a clean interface with no fluff

Simple rules. Deep thinking. Give your brain a tidy little workout with XO Toggle.