Following a beta test last month, the full version of Call of Duty: Black Ops 4 came out at midnight last night. The new game ditches the single player campaign previous Call of Duty titles had, and in exchange, gets a battle royale mode as well as a more story-like zombie mode. Treyarch actually released a launch trailer weeks ago, but they also put up new trailers for the zombie and battle royale modes last night. Check out the "Blood of the Dead" trailer here. The undead await in Alcatraz. This is 'Blood of the Dead' in Call of Duty: Black Ops 4, a reimagined return of a fan-favorite, complete with surprises hidden within the iconic penitentiary.