Cute little puzzle game, almost a paper puzzle. Early puzzles didn't feel super interesting as most of the time, the thing I thought was obvious was also the thing that worked, but the later puzzles were quite fun to figure out. My main complaint is that some quality of life features would be nice, like a grid / checkerboard pattern, a slightly larger playing area and maybe even a preview of what cells will be changed, at least after a few levels when you should have figured out the trick. Still, I quite liked this one, well done!