Cool game !
The concept is really simple but fun & well executed?
The art is very minimalistic but looks nice. The hiding spots could stend out a bit more as they tend to blend a bit with the rest (maybe a different color or an outline change when you hover over them)
The collision issues with the walls were indeed a bit annoying but, once you get the hang of it, it is definetly playable.
Great work! This is fun :)