The "shufflebuilding" game Smash Up begins with a simple premise: take the 20-card decks of two factions, shuffle them into a deck of forty cards, then compete to crush more Bases than your opponents! Each faction involves a different gaming mechanism - the pirates move the cards, the zombies bring back the cards from the discard pile, the dinosaurs have enormous power - and each combination of factions brings a different gaming experience.
During the game, basic cards (each with their own difficulties and abilities) are at stake. You try to have the most power on the basis of your minions when the base is broken. When a base is smashed, each player in first, second and third place scores points. Fourth place? Sorry, brother, next time.