Emesis Blue is a 2023 Australian adult animated independent psychological horror fan film directed by Chad Payne, based on the multiplayer first-person shooter game Team Fortress 2, and a sequel to the 2018 film Spy's Disguise. The film was produced entirely in Source Filmmaker, by the fan group Fortress Films, and released for free on YouTube on February 20, 2023. Emesis Blue bases many of its assets directly on those of the original game, following the nine playable mercenary characters on a fictionalized depiction of the 2Fort multiplayer map, but maintains a mature, surreal tone with a largely original narrative. At a total of one hour and 48 minutes, it received critical acclaim for its high production value and length, both of which were said to be closer to those of a feature film than a typical Source Filmmaker production. Drawing on the backstory originally presented in Team Fortress 2, the film is set on Halloween of 1968 during the fictional Gravel Wars between mercenaries hired by the companies of Builders League United (BLU) and Reliable Excavation Demolition (RED). The film follows a largely original plotline to its inspiration, rewriting elements of the story to present a more serious and grounded tone, but includes diegetic references to game mechanics like rocket jumping, the capture the flag game mode, and respawning, with a large part of the film's story focusing on a non-canonical "respawn machine" supposedly used in-universe to revive the mercenaries during fighting.