There was one level that I noticed didn't have any collisions, otherwise the game was very well polished! There were a handlful of levels with pretty easy solutions, that didn't engage with the rest of the level, but rather just involved sponging up water and moving it somewhere else. There were quite a few levels tho with really nice solutions, that required some clever use of the space! Would've been nice to see an extra mechanic thrown in towards the end, my solution to levels were starting to feel a bit formulaic. Otherwise tho, this game was great and fun to complete!