Nintendo has never been ones to conform to rules. They'll always go out of their way to make their games a little different to everyone else. Super Smash Bros. has for years now been their take on the fighting genre – you either get it or you don't.
Adventure mode will last you a long time; A soundtrack so good you can buy the game just for that; The spirits inject a whole new strategic element; 74 fighters and over 100 stages to fight in
Home-run contest is gone; Hopefully online mode won't be as broken as other Smash games