In the Deadly Aliens expansion decks, Killer Bunnies and The Ultimate Odyssey players can now add from a pool of 30 new cards to construct their own decks. Just like all Killer Bunnies games, these boosters don't just add extra duplicate cards, they introduce new mechanics and bring out unique aspects of gameplay. The Deadly Aliens expansion deck allows players to personalize their game decks as they wish. With cards such as Sighter Bunny, Alien Drone and Orbital Weapon, these expansion decks keep the game new and fresh, so no two playing experiences are ever alike!