Defiance final beta begins March 19 for PS3, PC and Xbox 360 to follow

Trion Worlds' open-world online shooter, Defiance, will enter its final beta on March 19 for PlayStation 3, March 22 for Windows PC users and March 25 for Xbox 360, the company announced.

Defiance takes place 35 years in the future in San Francisco, where Earth has recently been terraformed. The final beta is the third chance players will have to explore the early game as genetically enhanced operatives called Ark Hunters. Players participating in the Advanced Mission Beta 3 will venture through the Mt. Tam and Madera regions and engage in co-op multiplayer.

Beta sign-ups and the the full schedule are available on the game's website. Defiance will launch for Xbox 360, PlayStation 3 and PC April 2. The game is a tie-in to a SyFy show of the same name and takes place in St. Louis. Read our interview with creative lead Bill Trost here.