The Stanley Parable is an interactive fiction modification (mod) built on the Source game engine, developed by Davey Wreden and released in July 2011. A high-definition remastered stand-alone version, including new story elements, was developed by Wreden and Source modeler William Pugh under the Galactic Cafe development team name. The remake was announced and approved via the Steam Greenlight process in 2012, and released in October 2013 for Microsoft Windows and December 2013 for OS X. While both the mod and the remake use the first-person perspective common to other Source engine mods, there are no combat or other action-based sequences. Instead, the player controls the protagonist, Stanley, through a surreal environment, with each step of the process narrated, voiced by British actor Kevan Brighting. The player has the opportunity to make numerous decisions on which paths to take, including going against what the narration is telling them to do, each choice leading to different nar...