The concept of a more momentum-based platformer is one that I like, and I think this game does a decent job as one. The levels that utilize this concept effectively do it really well, and it makes speeding through levels surprisingly fun. However, not all levels use this concept well. Marble Zone, Labyrinth Zone, and Scrap Brain Zone all seem a little too slow for what this game was going for. The final boss was also a bit underwhelming. It wasn't particularly hard, and it doesn't really make you feel like a badass when you beat it. Overall this is a decent game and a fine start to the series, but there's a lot that could've been improved.