A new battle-royale game mode for Counter-Strike: Global Offensive (CS:GO), called Danger Zone, is now available for all Steam gamers. In addition, CS:GO has now gone free to play.
The next time existing owners of CS:GO login to play they will have their game files automatically updated via Steam to include the new Danger Zone mode. In addition, these players will be automatically upgraded to Prime Status (both free of charge).
Meanwhile, all Prime Status players are now eligible for the new Prime-exclusive Danger Zone Souvenir MP5-SD | Lab Rats.
Those new to CS:GO will have the option to play or pay their way to Prime Status ($14.99 US).
You can find more information about Danger-Zone (Battle Royale mode) over here.