Nice puzzle game.
What I like :
- The concept
- The simplicity of rules
- The readability of the level
- Nice music
What can be improve :
- See edge of cell, to count them easily
- Add an Undo feature
- Levels are too big without needing to. A big part has no puzzle interest...
- Need some juicy sound/particles/screenshake , etc...
Hope it helps.
Good job on this game.