Call of Duty®: Black Ops

Mauer der Toten, a new Zombies map set in Berlin, launched on July 9, 2021, marking a significant addition to Call of Duty: Black Ops. Alongside this, players received the CRBR-S Wonder Weapon and the craftable LT53 Kazimir item, enhancing gameplay options in Zombies mode. Additional new content included the introduction of the Mule Kick perk, allowing players to carry a third weapon, and dynamic wall buys that increase weapon rarity.

• New Zombies Map: Mauer der Toten launched, expanding the Zombies experience.
  • New Wonder Weapon: The CRBR-S introduced four variants for players to utilize.
  • Craftable Item: The LT53 Kazimir was added, providing strategic options for players.
• Expanded Scorestreaks: The Nuke scorestreak became available across all multiplayer modes, excluding specific variants.
• New Modes and Maps: The 2v2 Gunfight mode returned, and eight new multiplayer maps were introduced, including The Pines and Raid.
• Gameplay Adjustments: Enemy health and damage scaling were adjusted, improving overall balance.
• Balance Changes: Significant nerfs were applied to weapons like the M16, AUG, and Hauer 77 shotguns, while buffs were given to the FFAR 1 and several SMGs, enhancing their competitive viability.

The introduction of new multiplayer modes on September 9, 2020, marked a significant update for Call of Duty: Black Ops, enhancing gameplay with tactical 6v6 VIP Escort, 12v12 Combined Arms, and 40-player Fireteam modes. Alongside this, the expanded Gunsmith system allowed players to customize their weapons with up to 54 attachments, while the removal of specialists shifted to a traditional operator model.

• Scorestreaks System Overhaul: Players no longer lost score on death and could earn multipliers for kills and objectives, changing the dynamics of scoring.
• Return of Traditional Mini-Map: The game reintroduced a mini-map that highlights enemy players who fire their weapons, enhancing situational awareness.
• Battle Pass System Implementation: A new battle pass system provided a steady stream of free content post-launch, encouraging player engagement.
• Introduction of Field Upgrades: Field upgrades were earned based on time rather than score, with cooldowns applying after death, adding strategic depth.
• Unlimited Sprint and Auto-Regeneration: Players could sprint indefinitely and heal automatically, streamlining movement and combat.
• New Movement Mechanics: Enhanced movement options included sprint take-off, sliding to crouch, ziplines, and rappel lines, making gameplay more fluid.
• Cross-Platform and Cross-Generation Play: The game enabled cross-platform and cross-generation play, broadening the player base and matchmaking options.

Operation Grand Heist launched on February 19, 2019, introducing a wealth of new content across Multiplayer, Blackout, and Zombies modes. This period also saw the addition of a new Alcatraz-inspired Blackout map on April 2, 2019, designed for intense close-quarters combat, alongside multiple new weapons and game modes.

• New Weapons: Three weapons were added on December 8, 2018, including the Daemon 3XB SMG, SWAT RFT assault rifle, and the Secret Santa melee weapon.

• New Modes: The Hot Pursuit mode debuted on February 19, featuring new vehicles, while a Hardcore mode was introduced in both Blackout and Multiplayer for a more challenging experience.

• New Specialists: The Zero specialist was added, specializing in hacking, and the Outrider specialist introduced a pilotable Hawk drone and the Sparrow weapon on the same day.

• Zombies Content: A new Zombies experience for Black Ops Pass owners launched on March 27, 2019, including the Hellcatraz Gauntlet and new perks such as the Ethereal Razor.

• Balance Changes: The nerf to Level Three Armour in Blackout on January 26, 2019, adjusted its effectiveness against explosions and melee attacks, while concussion grenades received a significant nerf as well.

• Seasonal Events: The Shamrock & Awe event launched on March 12, 2019, offering a festive spring transformation for Blackout, while a 7-Day Free Trial for Blackout started on January 17 to attract new players.

• UI/UX Improvement: The Black Market contraband stream was revamped on December 8, 2018, reducing tiers to 100 and enhancing reward previews.

Tracked sources for Call of Duty®: Black Ops were limited between 2017-11-08 and 2018-11-08, with only 2 verified changes captured in this window. The recorded activity centers on Faster Tier Progression in Black Market and Improved Network Performance and sits between Zombie Nuketown Map Release on 2013-01-14 (new_content) and Nuketown Map Arrives on PS4 on 2018-11-10 (new_content), making this a light but still readable period in the game's history.

• Verified activity: 2018-10-24 - Faster Tier Progression in Black Market: Treyarch updated the tiered progression system to make it faster, allowing players to earn tier progression more quickly across all modes.; 2018-10-24 - Improved Network Performance: Treyarch completed the first phase of planned changes to network performance, addressing server send rate issues..
• What stands out: The period is defined more by a small number of isolated updates than by a large roadmap beat or expansion-sized release.
• Before this window: The closest earlier tracked activity was Zombie Nuketown Map Release on 2013-01-14 (new_content).
• After this window: The next tracked activity was Nuketown Map Arrives on PS4 on 2018-11-10 (new_content).

Zombie Nuketown Map launched on January 14, 2013, granting season pass holders access to this fan-favorite map in Black Ops 2. Additionally, the max field of view (FOV) increased to 90 degrees on November 22, 2012, enhancing gameplay by alleviating tunnel vision effects.

• New Content: Zombie Nuketown Map Release: Introduced a zombified version of the Nuketown map for season pass holders.
• Gameplay Improvement: Max FOV increased to 90 degrees: Expanded field of view to improve player visibility.
• Performance Enhancements: General performance improvements for CPUs with 4 or more cores: Boosted performance across singleplayer, multiplayer, and zombies modes.
• Network Improvements: Improved dedicated server matchmaking: Enhanced matchmaking experience for players.

Call of Duty: Black Ops introduced the expanded co-op mode 'Tranzit' on September 27, 2012, allowing up to four players to traverse the US while battling zombies. This update also brought a new 'Pick 10' loadout system, giving players the freedom to customize their gear with ten slots for weapons, perks, and killstreak rewards.

• New Co-op Mode: 'Tranzit' launched, featuring a large, interconnected map for players to explore and survive against waves of zombies.
  • Traditional Survival Mode: A classic survival mode was added, catering to fans of previous zombie experiences.
  • Versus Mode for Zombies: A new mode where two teams of four compete for zombie kills without damaging each other.
• Mobile Releases: Black Ops Zombies became available on Android and iOS, expanding the game's reach to mobile gamers.
  • Multiplayer Support: The mobile version featured wi-fi multiplayer for up to four players.
  • Voice Chat Feature: Enabled communication among players during mobile gameplay.
• Gameplay Enhancements: The loadout system now allowed flexible occupation of slots, enabling players to trade primary weapons for perks or wild card abilities.
  • Prestige System: A new mechanic required players to prestige to unlock additional gear pieces.
• DLC Availability: All previously released DLC was offered at half price during a promotion, benefiting the Call of Duty Endowment, which aids veterans.
• Mac Launch: The game launched on Mac OS X on September 27, 2012, including the 'First Strike' DLC pack, alongside plans for all DLC packs to arrive on Mac later that year.

Rezurrection launched on PC on September 22, adding the Moon Zombies map and four remastered World at War arenas. The pack introduced low-gravity gameplay and astronaut zombies, while Annihilation and First Strike delivered substantial multiplayer-and-Zombies map sets; Escalation remained an announcement rather than a confirmed release in the tracked material.

• Rezurrection: Moon added fluctuating gravity, astronaut zombies, the Wave Gun, and the Quantum Entanglement Device alongside Nacht der Untoten, Verrückt, Shi No Numa, and Der Riese.
• Annihilation: The map pack released four multiplayer maps—Hanger 18, Drive-In, Silo, and Hazard—plus the Shangri-La Zombies locale, with jungle labyrinths, traps, monkeys, and new undead threats.
• First Strike: The pack released Berlin Wall, Discovery, Kowloon, Stadium, and the Ascension Zombies arena, which featured Russian cosmonaut zombie monkeys and new weapons.
• Escalation: The announced pack included Zoo, Hotel, Convoy, Stockpile, and the celebrity-led Call of the Dead Zombies mission, but the supplied records did not confirm that it shipped in this window.
• Sniper Rifles and Hardline Pro: Suppressed sniper rifles received one-shot headshot multipliers, while Hardline Pro’s supply-drop rerolls were restricted to Care Packages.
• Mule Kick: The perk machine became available across all Zombies maps, broadening weapon-carrying options beyond the DLC arenas.