High Quality Content by WIKIPEDIA articles! Half-Life: Escape from City 17 is a Canadian short film written, developed, and filmed by the Purchase Brothers, set in the Half-Life universe, during the events of Half-Life 2 and Half-Life 2: Episode One. Both films were critically acclaimed, especially by Valve, the video game company responsible for the Half-Life series. The first part was released on February 13, 2009, and the second part was released on August 24, 2011.