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Developers Infinity Ward left an interesting tease at the bottom of the patch notes for this new update that says: Number station <redacted> is Protocol Yellow. Activate <redacted> system. <redacted> is inbound. Awaiting correct authorization. The tease is similar to the redacted information about the bunker locations that can be found within the Tac Map: Atlas of Activision’s online Warzone strategy guide. The redacted clue in the patch notes mention a “Yellow Protocol,” but the current access cards are red. Data miners have long been reporting the existence of multiple colored keycards within the game’s files. Maybe red is just the first entry level, and that will give you extra loot to fight whatever is set to come next. Maybe gaining access to the good stuff requires a yellow keycard for the second door, which is an item that hasn’t been discovered.

There are other mysteries besides the bunkers. Players are still reporting zombie-like sounds and wolf howls near the location of the dam, and others report strange sounds from the prison. I’ve heard howling sounds at the dam, but haven’t heard anything strange at the prison.

Event theories include the dam breaking and flooding the map, nukes destroying the whole city of Verdansk and forcing players into the bunkers, and juggernaut suits that can be accessed with certain keycards. Everything sounds slightly possible for a Call of Duty-style event, though I have no idea how howling wolves come into play. I just hope there’s much more to this mystery. I’d love to see some major landscape changes to Verdansk.


Update, 5/20, 6:05pm—After spending the day pilfering Warzone’s loot-filled bunkers on May 19, players finally uncovered steps that tease an even greater Easter egg quest.

There are 12 locked bunkers on Warzone’s map, but only some of them are opening with the red keycards. Currently, all of the above ground bunkers are accessible with the keycards except bunker 11.


Finding one of eight ringing telephones on the map and translating numbers given in Russian will send you to hunt down more phones. That leads to lots of trips across the map to find more phones and interact in a specific order.

All this has led players to unlock bunker 11, which has a lot more than just the loot boxes found in the regular bunkers. Bunker 11 has a few rooms to explore, including monitors that display a countdown timer that counts all the way down to two and then restarts. Another room has a self-proclaimed “shiny red button” that reveals a room with a nuke. Currently, there’s no admission to the nuke room, but there is a barred door that could possibly give future access.


While this week gave a wild tease, this Warzone mystery seems far from over. There are plenty of underground bunker doors that remain locked, and now there’s the question of what will happen with the nuke. Some players speculate that it will just give squads the ability to fight over the bunker for a match-ending nuke, like the nuke currently in Modern Warfare’s multiplayer. Some believe a nuke is inevitably set to go off and permanently change the landscape of Verdansk, requiring players to seek shelter in one of the underground bunkers. I’m really excited to see where this goes.