Welcome to a scuffle for the eras, where everything can occur, anybody can humiliate and all gambles are off. In multiplayer games, natures from all Nintendo worlds assemble up in Nintendo locales to duke it out. In the solo mode called "The Subspace Emissary," the world of Smash Bros. is attack by an entity called the Ancient Minister and his army of makers, called "The Primid." Normally, characters come alive in the world of Smash Bros. to do fight and then turn back into trophies when beaten. However, the Ancient Minister starts rotating characters into trophies to attach their power and then detonates bombs that suck pieces of the world back into his realm of Subspace. Ultimately, all the characters must work mutually to defeat the invading makers from Subspace - this is accomplished by playing through side-scrolling stages.