Castle Clearout

Hexapuzzle (named Castle Clearout in the North American version) is an extra minigame featured in Mario Party 9. One to two players can play.

Gameplay
The player can first select which level they may play (however, he or she must choose level one if it is their first time playing), and there are fifty levels total. The game is like Dr. Mario, in that the player must clear levels by placing a group of three marbles onto the ground to clear the three marbles with a star pattern on them, as well as similarly colored marbles. The player can achieve this by rotating the marbles to match colors with them. Clearing a group of marbles with similar colors in the shape of a line, pyramid, or hexagon also clears any other marbles of the same color. As the player passes through levels, more and more marble colors will appear. Colors include red, blue, green, yellow, and purple, with the former three being the default colors. Another similar element to Dr. Mario is that the player must avoid having the marbles touch the top of the area, or he or she will lose.