Pokemon Channel, if it can be technically be called a "game".
Otherwise, Chronicles of Narnia: Prince Caspian on the Wii. I think a relative just kind of gave it to us. The text is too small to read most of the time, the screen is too dark, and it's extremely hard to figure out what to do for no reason. The game tells you to do something, but not HOW to do it. Then it turns out like, you have to press some button combination with this one character at this one precise spot on an unmarked wall or whatever. Like, how was I supposed to know that?!

If it fixed the problem of giving unclear directions and was slightly less finicky/buggy, it probably could've been a decent multiplayer experience. Never bothered to beat it to this day though, too frustrating to accomplish much.