Cute story. The gravity switching made for some interesting puzzle solving and platforming. The levels were interesting to puzzle out and explore. Lazer puzzles were fun. I really liked the rounds where I needed clear 100+ just by pressing a button. The fun and easy game is refreshing between the more challenging puzzles.
The purple blob look was used for a few things, some safe, some dangerous, some to block an exit. They only looked subtly different and I assumed their effects would be similar. I think they should look more different from each other. In other case, you had something spiky that was obviously dangerous, lazers looked like light, wood looked like barriers. I really needed to test the blobs to guess what they did.