I played Smash 4 for Wii U with classmates, 8-player smash certainly is quite astounding. The influx of players makes it far more confusing to track where you are and who you're fighting. Everyone eventually gets knocked off stage and it ultimately comes down to last man standing in stock mode.
One of the hilarious moments I've experienced was me as Ganondorf using aerial Flame Choke on King Dedede in the lower center of Palutena's Temple; we landed on a floating platform and somehow Dedede fell through it, tried to recover via Super Dedede Jump but failed, and fell to his death. On our last stock, we Ganoncided (we both lost because there was another player still standing).