Sphere Factor

Sphere Factor is a 2-vs-2 minigame in Mario Party 7. Its name is a pun on the reality show Fear Factor, as was the name of the Mario Party 6 minigame, Pier Factor.

The point of the minigame is for each of the pairs to get to the other side of the place. They must push a giant ball around/through many obstacles. These include mini-mazes, Monty Moles, Whomps, and a particularly hard to get over bridge. If the ball falls off the bridge, it needs to pushed up a steep hill.