i really liked this one. the math hook is really a really nice take and the overall presentation is also top notch.
the only gripe i have is the walk speed. this is basically a puzzle game, so most of the time you will try to figure out the solution beforehand and then execute your solution, but the slow walkspeed makes that execution very boring. either make the normal speed a lot faster or add a sprint function when you press the mousebutton, then i thinks this would be really fun to play (and train a bit of math XD)