Treyarch and Raven Software have confirmed that its alpha test of Call Of Duty: Black Ops Cold War has become the most downloaded PS4 alpha test in Call Of Duty history.The news was shared via the official Call Of Duty account on Twitter. “Thanks to our players for making last week’s #BlackOpsColdWar Alpha the most downloaded PS4 alpha or beta in Call Of Duty history,” reads a portion of the tweet.