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.

Call of Duty®: Black Ops saw significant content additions in its first year, highlighted by the launch of the Annihilation DLC on July 28, 2011, which introduced four new multiplayer maps and a new zombie locale, Shangri-La. The Rezurrection DLC, released on September 22, 2011, also brought a brand new zombie map set on the Moon and remastered maps from *World at War*.

• DLC Releases:
  • Annihilation Content Pack launched on July 28, featuring maps like Hanger 18, Drive-In, Silo, Hazard, and the zombie map Shangri-La.
  • Rezurrection DLC released on September 22, introducing the Moon map and four remastered zombie maps from *World at War*.
  • First Strike DLC launched on February 1, 2011, adding four multiplayer maps along with a new zombie map, Ascension.

• New Content:
  • Added new multiplayer maps in the Annihilation pack, including locations such as Area 51 and a golf course.
  • Introduced new gameplay mechanics with the Moon map, including low-gravity environments and astronaut zombies.
  • The First Strike DLC featured new multiplayer maps like Berlin Wall, Discovery, Kowloon, and Stadium.

• Gameplay Enhancements:
  • Revamped kill streak system introduced on October 21, allowing rewards to be earned through points instead of kills.
  • New classes were added, including Assault, Support, and Recon, each offering unique gameplay mechanics.
  • Introduced a double XP weekend event to celebrate the launch of the Rezurrection DLC.

• Balance Changes:
  • Increased sniper rifle headshot multipliers, ensuring one-shot kills for headshots with suppressors.
  • Fine-tuned weapon damage and adjustments to explosives for improved multiplayer balance.

• Seasonal Events:
  • A free multiplayer weekend event on Steam allowed players to try out the game without charge on June 2, 2011.
  • Double XP weekends were held to celebrate the launches of both the Rezurrection and Annihilation DLCs.