The game formerly known as Extraction, now called Dirty Bomb, from developers Splash Damage, is now available to play in beta format on the PC via Steam.
Currently in closed beta, the 100,000 codes for the game are being sent out to prospective gamers who applied to get in. They'll be able to play the game over two weekends.
Splash Damage says that the purpose of the test is to stress-test the servers.
There are two scheduled tests. The first starts today at 9am PST through Monday, February 23 at 9am PST. A second test will take place Friday, March 6 at the same times.
You can register on the official website if you'd like to get an invite to play Dirty Bomb.