Straight improvement compared to SMG1, I like the level design a lot more and the physics feel better optimized. Green stars are fun to send you back through the levels and the final levels are all really fun. The only things that I don't like about the game are Battle Belt Galaxy, having to use motion controls to spin, massive delay between playing each star, and having a massive star bit requirement to unlock the final level that the game does not make clear to you to do.