The Party Ball is a floating placeable level objectobject. It originates from Mega Man 8, but it also made an appearance in Mega Man & Bass and in Mega Man Powered Up. In Mega Man Powered Up, there is the version that drops items, and another version that works as an alternative distinct from Bosses in the level editor.
In Mega Man Maker, once the Party Ball is shot, the game enters the same state as touching the Energy Element, ending the level. The Party Ball is effectively intangible, not having any presence unless it is shot.