GW2 may refer to: Gears of War 2, a science-fiction third-person shooter Geometry Wars: Retro Evolved², a multidirectional shooter video game created by Bizarre Creations Guild Wars 2, a massively multiplayer online role-playing game by ArenaNet Iraq War of 2003, or Gulf War 2 Plants vs. Zombies: Garden Warfare 2, a 2016 video game by PopCap