All of the other cards in the deck are used to move, mitigate, or avoid the Exploding Kittens. In this highly-strategic, kitty-powered version of Russian Roulette, players draw cards until someone draws an Exploding Kitten, at which point they explode, they are dead, and they are out of the game - unless that player has a Defuse card, which can defuse the Kitten using things like laser pointers, belly rubs, and catnip sandwiches.
A Card Game for People Who Are Into Kittens and Explosions and Sometimes Goats