Defiance was a -themed developed by . Defiance took place on a terraformed several years into the future. It was a to the show of the . The game was released in April 2013 for , and . It was also released on . The game went on June 4, 2014 for PC, August 14, 2014 for PS3 and November 18, 2014 for Xbox 360. Official game servers, community forums, and social media outlets were shut down by owning company Gamigo on April 29, 2021.
Characters come from one of four Origins: Veterans, Outlaws, Machinists, or Survivalists. Veterans are a group of soldiers who survived The Pale Wars, a massive conflict between humans and aliens. Outlaws are criminals who raid and destroy for fortunes. Machinists are scavengers, who recover alien technology to make profits and a living from it. Survivalists are humans or aliens who attempt to survive in the newly formed, hostile world. Besides initial starter weapon and also costume - this choice, similar to Race (Human, Irathient, and Castithan) has no consequence in the later game, with all weapons, abilities and costumes being equally accessible to all players beyond the tutorial area.
Players can choose to be either a Human or an "Irathient" (a humanoid alien species who are similar to humans), or the Castithan race if they have particular downloadable content available.
The Ark Hunters are injected with an EGO (Environmental Guardian Online), a symbiotic, neuro-muscular bionetic implant developed by Von Bach Industries, which helps players navigate the Bay Area and gives them access to unique abilities