What an incredibly fully-featured character! The special SRB2-style music for the Mega Mushroom, all these power-ups, the enormous moveset that somehow doesn't make Mario completely overpowered(Maybe the cape a little, but that's always been OP, and Tails exists), the menu and customization, game-revamp for boxes and coins, all these little details....I'm blown away, and I didn't even discover everything yet. Definitely one of my favorite characters up there with the likes of Skip!
It takes a bit to get some comfortable controls set up, but do take that effort, because it is SO worthwhile!