Despite Mario (and later, Wario) serving as hosts, this game isn't really for puzzles of things from the Mario universe. Rather, it's just a bunch of standard Picross puzzling going on here. There's a pretty substantial number of puzzles, in fact, and some of the later ones become quite fiendish. Most of them do a little animation after solving, which gives things a nice little flourish. It's totally playable even if you can't read the Japanese. This was a pleasant surprise for me on NSO.