I intended on completing all of the side stages, but man, I just couldn't. This game has a lot of clever ideas, especially in the way enemies are recontextualized as tools in many places, but the controls can't keep up. There's a constant sense of lag every time you start or stop moving, which removes that ever-important sense of satisfaction in movement that the main Mario series nails so well. Also, the final boss (of the main story) was extremely unintuitive. After slamming my head against it for a while, I had to look up how to do it, and I know the only way I would have ever figured it out on my own is dumb luck. I do appreciate the sheer amount of content they packed into this little cartridge, and the presentation is excellent, but the fundamental issue of movement made the whole experience pretty mediocre for me.