This is like those one-off fighting games (Capcom Fighting All-Stars, NeoGeo Battle Coliseum, SVC:Chaos) where they have a roster so bad that you'd think they actually had to pay their own characters to appear in it. "Mario is busy, who can we get in this game?" "I don't know, what is Lakitu up to?" "He's doing cereal commercials, let's just get someone from a mobile game..." That having been said, I'd love to suffer through this game 20 times just to see what hidden characters you unlock. There's probably 1 or 2 really cool people you wouldn't expect.