Defiance is a MMO shooter game with SF themes, published by Trion Worlds. The idea of ​​the game is inspired by the TV series with the same name, but I'm a unique story. The defiance action takes place in the Gulf of San Francisco after an intense change of Earth, which has led to new species. Several extraterrestrial races came to Earth to settle here, which led to wars, devastation and more planet. After war, people and aliens, votans, have learned to join. Players can choose in the role of "ark hunters" that are sent by Karl von Bach (CEO for von Bach Industries) in the Gulf area to search for extraterrestrial equipment. In addition, players will have other missions to earn money and competitions with other arc hunters.