Keystack: Color Sort Lock

Babylon Game Studio

Contains ads

About this game

Stack the colors. Open the locks.

Tap a pillar to lift its top discs, then tap where they should go. Discs only land on their own color or on an empty pillar. Fill every pillar with a single color to clear the board.

Then the locks arrive. A locked pillar cannot be touched until you complete the color shown on its lock, and opening it can set off a chain. The question is no longer only where, but which color first.

- 150 levels, from a two-color warm-up to twelve pillars with double locks
- Every level is proven solvable by a solver before it ships
- A new Daily Challenge every day, the same board for every player
- Three stars for solving close to the best move count
- Three free undos per level
- Hints that only cost a video when a hint actually exists
- Every color also has its own symbol, so the game does not rely on color vision alone
- Calm original music and sound, warm dusk look
- Progress saves automatically, even in the middle of a level
- Plays offline, one hand, short sessions

Keystack is free to play and contains ads. Extra undos, hints and an extra empty pillar are optional and offered in exchange for watching a video.

What’s new

New app icon and more reliable hint, undo and extra pillar buttons.