After a short delay,Call of Duty: Black Ops Cold WarSeason 1 has been released to the masses, integrating the latest game in the long-runningCall of Dutyseries with theWarzonebattle royale. The update is huge, adding a ton of content to both theCall of Duty: Black Ops Cold Warmultiplayer and Zombies experiences, as well as making some significant changes toWarzoneas well.

Treyarch has released somebigCall of Duty: Black Ops Cold WarSeason 1 patch notesto go along with the update, detailing many of the important changes that fans can expect to see once they download it. This includes information on some of the newCall of Duty:Black Ops Cold Warmultiplayer maps and game modes, like the highly-anticipated return of the popular 2v2 Gunfight game mode. It also mentions some weapon balance changes and other tweaks that were made to both games.

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On theCall of Duty: Warzoneside of things, the Season 1 patch notes mainly highlight the new experiences that have been added. This includes the brand newCall of Duty: Warzonemap Rebirth Island, which is the game’s first new map since its launch last March. It also highlights thenew Gulag experiencesthat players can find on both the Verdansk map as well as Rebirth Island, in addition to some of theCall of Duty: Black Ops Cold Warweapons that are now available inWarzone.

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However, not all of the changes were mentioned in the patch notes. As usual, there were some secret changes made to bothCall of Duty: Black Ops Cold WarandCall of Duty: Warzonewith the Season 1 update, for whatever reason.

Rebirth Island Easter Egg

Call of Dutygames, especially those developed byBlack Opsseries developer Treyarch, are famous for their easter eggs, andWarzoneSeason 1 is no different. The Rebirth Island map sees the addition of a new easter egg that players can complete in exchange for an exclusive reward, with no mention of this easter egg in the patch notes.

To complete theCall of Duty: WarzoneRebirth Island Easter Egg, players first have to find a briefcase that spawns in one of eight random locations on the battle royale map. After finding the briefcase, players will then be shown three photos of different locations around Rebirth Island. This is also randomized, so players will need to have pretty good knowledge of the Rebirth Island map and its locations if they want to successfully complete this easter egg before the match is over.

call of duty black ops Cold War theater mode in barracks menu

The briefcase photos will leadCall of Duty: WarzoneRebirth Island players to three different parts of a code. Once they have the complete code,Call of Duty: Warzoneplayers can go to the Headquarters Command Center on theRebirth Island map(assuming it’s not already shrouded in poison gas) and enter the code on the keypad next to the yellow door. Inside the yellow door is the special SMG blueprint called the Red Room SMG, a reference toCall of Duty: Black Ops Cold War’s codename when it was in development and how its leaked alpha appeared on some digital marketplaces prior to its reveal.

Split-Screen

Call of Duty: Black Ops Cold Wartechnically had split-screen since launch, but using the feature was unnecessarily cumbersome, and some Xbox Series X players reported being unable to access split-screen at all. NowCall of Duty: Black Ops Cold Warhas much easier to use split-screen features across the board, with a message added to the main menu telling players they can switch split-screen on with a simple press of a button.

RELATED:Call of Duty: Black Ops Cold War Update Adds Split-Screen to Zombies

call of duty warzone verdansk airport bunker

The tweak to make split-screen more easily accessible through the main menu was not mentioned in theCall of Duty: Black Ops Cold WarSeason 1 patch notes, but one split-screen change was highlighted byTreyarch. As of the latest update,Call of Duty: Black Ops Cold WarZombies supports split-screen. Why this important feature was left out of the game at launch has not been revealed, but many Zombies enthusiasts will be happy to see it return.

Theater Mode

Call of Duty: Black Ops Cold Warlaunched with Theater Mode, which has proven to be a popular tool among those in theCall of Dutycommunity. However, after downloading the Season 1 update, someCall of Duty: Black Ops Cold Warplayers may have a bit more difficulty finding Theater Mode. As it so happens, the update has moved Theater Mode’s location, so players have to go elsewhere to find it.

To findCall of Duty: Black Ops Cold War’s Theater Modeafter the Season 1 update, players will need to go to the Barracks section of the menu. It will be located at the bottom of the list of options, right underneath Achievements. No one has provided an explanation as to why Theater Mode was moved around as it wasn’t mentioned in theBlack Ops Cold WarSeason 1 patch notes, but now players should still be able to access it with minimal effort.

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Verdansk Airport Bunker

While manyCall of Duty: Warzonefans have been focused on the new map, Rebirth Island, the Verdansk battle royale map got some live at the start of Season 1 as well. Now thatCall of Duty: Warzoneis integrated withBlack Ops Cold War, many ofBlack Ops' weapons have been added to the battle royale. In fact, players are able to swap between loadouts of the two games, so they can put one together based onCall of Duty: Modern Warfare’s arsenal, another based onBlack Ops Cold War’s weapons.

It seems the bulk of changes made toCall of Duty: Warzone’s Verdansk are noted in the patch notes, but there is one big one that fans have had to discover for themselves. After downloading theCall of Duty: WarzoneSeason 1 update and visiting the Verdansk airport, players will notice a large hole in the runway. If they drop into the hole, they will find themselves inside yet another one ofCall of Duty: Warzone’s bunkers. This one doesn’t require a keycard for entry, but is still typically filled with fairly high-tier loot for players to collect.

Right now theVerdansk airport bunkeris a high-traffic area, as players are dropping there not just for the easy loot, but to see what it’s all about. Considering this, players may want to exercise caution before making it a destination until things cool down a bit.

XP Stealth Nerf

Now, this latest secret change may or may not be accurate, but according to reports from the community,Treyarch may have nerfedCall of Duty: Black Ops Cold War’s XPwith the Season 1 update. This was not mentioned in the patch notes and has not been confirmed in an official capacity, so it’s possible that players are misremembering how quickly they were earning XP previously, though that seems doubtful.

According to some members of theCall of Dutycommunity, XP inBlack Ops Cold Warhas pretty much been nerfed across the board. This would include XP that players get to level up their personal rank, as well as other things in the game. Not only that, but the amount of XP players were getting from playing Zombies also seems to be nerfed. It’s possible that this was done becauseCall of Duty: Black Ops Cold Warrecently introduced its first Battle Pass to coincide with Season 1, but that’s just speculation at this time.

It’s possible that there are even more secret changes inCall of Duty: Black Ops Cold WarandWarzoneSeason 1 after the update, but they have yet to be discovered by the community. If anymore secret changes crop up, we will update this article to make note of them.

Call of Duty: Black Ops Cold Waris out now for PC, PS4, PS5, Xbox One, and Xbox Series X.

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