The World was saved. Mario went back to the kingdom and became it's king while Luigi roamed the world. Captain Falcon went back to racing. Sonic had a one night stand with Samus which lead to them becoming friends. Samus had to sell her ship as she didn't get her job back. Knuckles went back to guarding the Master Emerald which somehow was not stolen. Snake got paid for his mission and live a peaceful life.
More things happened but they are not important enough to mention.
Thus ends the story of the Smash Bros.
