Unfortunately we didn't manage to teach the mechanics properly, but if you would like to try again, the main mechanic involves shadows, you should be able to figure things out by interacting with them :D
Another thing that's really not well explained is that you can rotate the light in the second level, that's our bad
You can also see both of these mechanics in the gif's on the submission page, as we tried to explain them retroactively XD
Anyway, thanks a lot for trying the game out!