Hi, Aidan from English class, I think level 3 and 4 are broken, you don't need to do anything because they just bounce into the correct placement. I do not know if that is just me or by chance. The game is really fun though, it challenges the brain, it is not too easy, but also not impossible. I enjoyed playing it very much, thanks for developing it! 10/10 even though levels 3 and 4 did not work properly because everything else made up for it/