World War Z: Aftermath, the co-op zombie shooter based on the best-selling novel (and ahem movie), is the latest free game from the Epic Games Store. Developed by Saber Interactive, this action-packed survival game originally launched as World War Z in 2019 and later received the Aftermath expansion, introducing new locations, melee combat, and a first-person mode. World War Z: Aftermath is a four-player co-op shooter inspired by Left 4 Dead, set in a world overrun by fast-moving zombie hordes.