During today’s Alcatraz map announcement, Treyarch snuck in a little bonus at the end of the trailer. Blackout will be free from April 2nd through April 30th.
Starting April 2nd until the end of the month, all PC, Xbox One, and PS4 players will have free access to Blackout, while PC and Xbox One players will have to wait a week to jump into Alcatraz.
Good moment to try another battle royale game :)!
Just keep in mind, you need PS+/Xbox live to play this game.