I have some minigame ideas. All are taken from another game.
Paint Attack! (Origin:
Graffiti Runner from Mario Super Sluggers)
Type: Free For All, 2 vs 2 and Duel.
Object: Everybody has a paintbrush and they must paint the most area.
Tips: Painting a circle and jumping in the middle will fill up the whole square.
Control Style: Wii Remote sideways.
Controls: Control Pad to move, 1 to dash and 2 to jump.
Players vs Zombies (Origin: Zombie Tag from Wii Party)
Type: 1 vs 3
Object: Three players have turned into zombies and they must catch the fourth. The one alone must survive for 30 seconds.
Tips for the solo player: You are faster than the three zombies combined, so don't get cornered.
Tips for the team of three: The solo player is faster than the three of you put together, so corner them!
Control Style for both teams: Wii Remote sideways.
Controls for both teams: Control Pad to move.
Spinning Confusion (Origin:
Spin Doctor from Mario Party 7)
Type: Duel
Object: Run to the goal by going through several spinning checkpoints.
Tips: Slow and steady! Watch which way the check points move before you enter one.
Control Style: Wii Remote sideways.
Controls: Control Pad to move.
Notes: Exactly the same as Spin Doctor, except that Spin Doctor split up the screen vertically. This minigame splits up the screen horizontally.