The concept is cool ! I had a little bug in the level 3 where the 2 robots at the left of the screen accidently stepped on a wall when it came back (i guess) and they were actually floating. I'll leave you a screen so you can see what i'm talking about haha.
Other than that, the game was really cool ! It's just not really clear what walls are timer-based or not unless you try them and so you can softlock yourself pretty easily (especially at the beginning of the second level).
Good job !
