The Survival of the Fittest™ Expansion includes three all new card decks for Last Night on Earth®, as well as new game mechanics (such as Barricades and Sewers), and several intense new Scenarios.  The Heroic survivors of Woodinvale can now find powerful Unique Items to help them in their struggle as well as the use of Survival Tactics to keep them alive through the night, while the relentless horde of Zombies is more ferocious than ever as they begin wielding a host of gruesome Grave Weapons against the Heroes.  These three new card decks (Unique Items, Survival Tactics, and Grave Weapons) can be seamlessly integrated into all existing scenarios.  Survival of the Fittest™ also includes new cards for the main Hero and Zombie Decks as well as four full color sheets of die-cut counters.