https://www.gamespot.com/articles/were-giving-away-free-call-of-duty-black-ops-4-bla/1100-6460915/

We're giving away 500 Beta codes for Call of Duty: Black Ops 4 Blackout Battle Royale mode. Scroll down to enter below.

This is not an instant win. Five-hundred (500) winners will be selected at random and receive an email with the code. No purchase necessary. Codes are for the Call of Duty: Black Ops 4 Blackout Battle Royale mode Beta only and do not give access to the full game when it launches officially.