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. Sounds easy? Is it easy when an opponent's Alien-Ninja decides to tie your minions to other Bases - flat Murder them? What happens when the Pirate-Dinosaur Full Sails player and frees King Rex to trample your minions in the ground, or when wizard-zombies use their mystic power to create an outbreak, suddenly flooding minions on the base of the discard pile? Or if you were facing a Zombie-Dinosaur player instead and he created an epidemic of massive beasts at the same time?!?