Thwomper Room
Thwomper Room is a Free-for-All minigame featured in Mario Party 9. The name is a pun on the term "romper room" (which is a term for playroom).
Introduction
The camera does a close up of the two central Thwomps. Their eyes open and they slam into the floor. The camera spreads out to show the whole room.
Gameplay
Players try to survive among the falling Thwomps. Touching a Thwomp in any way results in immediate elimination. A Thwomp's eyes will open just before it crashes to the floor, providing warning for the players. Players can also jump, and can slow down other players by jumping on their heads. This can become a drawback, however, as the character being jumped on might jump, which causes the jumper to touch a Thwomp and be eliminated. The last player remaining, or any players remaining after 30 seconds, wins.
This minigame also appears as a Reverse Minigame. In it, the first player to get taken out by a Thwomp wins.