Home News Killzone Mercenary Killzone Mercenary a completely new game created for PlayStation Vita Made by Guerrillla Games. Image credit: Eurogamer News by Robert Purchese Associate Editor Updated on Aug. 15, 2012 25 comments Follow Killzone Mercenary Curtains back, it's Killzone Mercenary, a completely new first-person shooter created by Guerrilla Games for PlayStation Vita. Sony announced the game during its Gamescom press conference in a snazzy CGI trailer. Details were thin, with Sony promising to reveal more at a later date. The first trailer.