Fourside

Fourside is unlocked by playing 100 battles in VS. mode. It is also Ness's home stage, but you face Pichu and its teammates here in All-Star mode.

The stage consists of three buildings. The building on the far left is slanted, so items tend to roll off. The middle building is split into three parts: the top, two small ledges on either side in the middle, and a semi-long edge on the right. The building on the far right is the shortest one with a flat surface. On the far left building, there is a crane with a platform attached to it. It will move to the left a little and over the center of the building. Once in a while a UFO will appear over the left or right building. Characters can fight on top of the UFO. The UFO has a slippery terrain though, but characters like the Ice Climbers won't have a problem walking on it.

The pits between the far left building and the middle building and between the far right building and middle building are narrow, which is good for characters who can wall jump.

Fourside is banned in single-player tournaments, largely due to Peach's ability to stall by using Peach Bomber repeatedly in a pit. However, Fourside is legal in two-on-two matches.