The implicit setting in Apocalypse World is developed by the players as they create their characters and takes on various assumptions depending on the playbooks (character types) that are being used at any given time.
Vincent Baker authored Apocalypse World, which was first published in 2010. It won the 2011 Golden Geek RPG of the Year award as well as the 2010 Indie RPG Award. In 2016, a second edition by Muguey Baker and Vincent was successfully Kickstarted. The second edition kept the majority of the original's design while updating some of the mechanics (Hx, battle-moves, threat map, etc.) and playbooks (such as switching the Operator with Maestro-D and Quarantine).
Character creation elaborates on the implied post-apocalyptic setting of the game. Each playbook incorporates and draws inspiration from specific setting elements, such as the Hardholder, who controls the local community's size, population, and aesthetic. During the character creation process, the shared past of the characters is also established. The game's survival and interpersonal relationships themes are evident in its "pure lethality." Notably, the Master of Ceremonies (MC) is not permitted to plan anything prior to the first session so that all participants can work together to create the game world.