So, I finally spent the measly $10.00 to get MP2 on the Wii's Virtual Console, and I'm really enjoying it. However, after several board maps' worth of play, there's still a couple of 2v2 minigames I've yet to unlock. So my question is, in which modes other than the main board maps, if any, can you unlock new minigames, and which of those would be the fastest? I've unlocked both Battle and Trial mode at the Minigame Stadium already, and I'm pretty sure I have all the 4p's and 1v3's (although I haven't quite bought them all yet).
Also, I haven't played one of the board maps yet; does unlocking/playing the sixth board (I'm assuming there is one, aar, there's a gaping hole in the center of the main menu) unlock anything else?