I played MP8 and I've unlocked 79 minigames! I haven't bought Table Menace and I'm halfway through Star Battle, meaning I haven't unlocked Superstar Showdown.
In Brawl, I recently managed to get 10 KOs in Cruel Brawl (effectively proving my Golden Hammer use on the Red Alloy was a waste), and I also managed to clear Level 5 Target Test under 30 sec.