"Mario Super Sluggers" is a game I've spent a hell of a lot of time on, more so than any other "Mario" sports game. Despite it not being the absolute best sports spinoff in the "Mario" franchise, I still found myself coming back to it quite a bit.
It's still extremely fun to play, has some pretty good visuals, a fun single-player mode and an enormous roster of characters.
That said, the game is definitely flawed: most of the fun in the game is only experienced in multiplayer, some of the minigames are forgettable, and the lack of customization for Mii players is discouraging. Even so, "Mario Super Sluggers" is an enjoyable, fun, and great multiplayer baseball sim.
Final rating: 8 out of 10 "Great"