In the second season update of Call of Duty, not only is there a collaboration with Teenage Mutant Ninja Turtles, but also the return of health bars, remastered old maps, and new content for multiplayer and zombie modes, bringing some innovation and fun. With the third season approaching, this article brings you a summary of the COD21 Season 3 update content. Let's take a look at what's new, and predict if there are any modes or weapons that suit your taste.

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Update time:
Multiplayer, Zombies: 0:00 on April 3, 2025, Beijing Time;
Warzone: 0:00 on April 4, 2025, Beijing Time (some content will be synchronized with the main game).
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I. New Weapons and Attachments
6 new weapons
1. Rocky 141 Assault Rifle: Base magazine capacity of 30 rounds, max level 42, balanced performance, unlock by logging into Warzone before April 16.

2. CR56, max level 42, 30-round magazine. Good damage, fire rate, and control, strong suppression within 25 meters. Unlock for free on the sixth page of the Battle Pass.

3. HDR Sniper Rifle: Anti-materiel weapon, unlock at level 38, 5-round magazine, low bullet velocity but extremely long range, requires attachments to optimize bullet velocity and range (unlock for free on the third page of the Battle Pass).

4. Dual Wield Nunchucks: Melee weapon, unlock at level 30, fast attack speed and two hits to kill (unlock through event).

5. Andra SMG: Unlock at level 37, 30-round magazine, fast fire rate, low recoil, but lower damage, relies on headshots to increase efficiency (unlock through mid-season event).

6. Nail Gun: Special weapon, 15-round magazine, high damage at close range, ineffective beyond 25 meters (unlock through subsequent events).

4 core attachments:
1. Integrated Suppressor: Sacrifices flexibility to increase range, compatible with all firearms except special weapons (unlock on the seventh page of the Battle Pass).

2. SWAT556 Full Auto Conversion: Can be converted to "Gran 556", reducing damage and range while increasing accuracy and unlocking a 50-round magazine (unlock on the fifth page of the Battle Pass).

3. C9 Ten-Millimeter Magazine: Increases damage and range but increases recoil (unlock through the Battle Pass).

4. Goblin Explosive Rocket Modification: Sacrifices bullet velocity and fire rate for explosive arrow damage (unlock through event).

II. Battle Pass and Rewards
Free Content
Unlock for free through the Battle Pass: CR56 (sixth page), HDR (third page), Dual Wield Nunchucks (event).
New "Camouflage Collection" feature to track weapon camouflage unlock progress.

Paid Content
Immediately unlock the operator "Hudson" and the SAUG Legendary Blueprint by purchasing the Battle Pass.

"Black Organization" Pack, immediately unlock the exclusive operator R0-Z3 (Black Mule) and exclusive blueprints (such as XM4), and subsequently unlock 10 operator skins and 6 black-gold blueprints.

III. Multiplayer Updates
New Maps (6)
1. Artillery Barracks: Vietnam War theme, 6v6 medium map.

2. Fire Net (Afghan Ruins): 2v2/6v6 small map, focused on close-range combat.

3. Reset Range: Classic map remade and returned, medium symmetric structure (nostalgic).

4. Safe Haven: Transplanted from COD20, 6v6 medium map (update in April).

5. Offshore Oil Rig: 2v2/6v6 multi-level combat scene.

6. Variant map of Nuketown.
New Modes
1. Marksman Mode: All players have the same equipment, weapons change every 45 seconds, kills stack buffs (movement speed, reload speed, etc.), five kills grant double points.
2. Advanced Bomb: Teams take turns attacking and defending bomb sites, infinite respawns, must destroy all targets to win.
3. Joint Operation: A cycle of five modes including Team Deathmatch, Domination, and Hotspots, with double health, low gravity, and third-person perspective (launching mid-season).
New Perks and Killstreaks
1. Narrow Escape: Use melee weapon directly for close combat instead of the buttstock (unlock through event).
2. Blood Debt: Mark the killer upon respawn, eliminate them for extra points (can be countered by "Alert").
3. Death Machine (825 points): Mini Gatling gun, kills accumulate killstreak progress.
IV. Zombies Mode Updates
1. New Map - Split Screen Manor: An old mansion on the hills of Yishui Town, includes main missions and new zombie types:

New Zombie Elder Disciple: Enhances nearby zombies and summons reinforcements, must be killed quickly.
New Variant Catalyst Zombie: Toxic attribute, rushes towards players and explodes, leaving acidic venom.
2. Wonder Weapons:
Bloodshot (Mark II): Three-shot energy weapon, with three variants, can be upgraded to SMG, modern gun, or sharpshooter mode.

DGR Electric Gun: Chain AOE control weapon, can chain-kill zombies (unlock by completing the main mission of Hunting Stakes).
3. New Mechanisms
Ninja Turtle Rampage Mode: Shared countdown for the team, kill zombies to gain essence, rewards 6 self-selected advanced candies after 50 waves.
Frost Shock Battlefield Upgrade: Freezes enemies within range (launching mid-season).
V. Ranked Function Upgrades
SR Reimbursement: Players affected by cheaters will be compensated with SR points, and cheaters in teams will have their points deducted.
Reconnect: Can reconnect to the match within 5 minutes, failure reduces SR loss.
VI. Limited-Time Events
1. Return to Verdansk (April 4-16), Warzone only, log in to receive Kilo 141, Domino, and Military Simulation; veterans can receive parachutes, exhaust, and gun screens; complete event challenges to unlock the safe and obtain 14 rewards.

2. Black Ops Tribute (April 18 - May 2)
Unlock the nail gun, C9 magazine, death machine, and more by accumulating experience, with the final reward being a mysterious agent skin.

In conclusion, the introduction of the COD21 Season 3 Warzone content is complete. This update expands gameplay depth with a large number of new weapons, maps, and modes, especially the Hunting Stakes map and wonder weapons in the Zombies mode are worth exploring. The multiplayer mode focuses on competitive balance (such as the SR reimbursement mechanism), and the Battle Pass rewards cater to both free and paid players. In terms of optimization, it supports NVIDIA 9070 graphics card driver FR4 optimization, which needs to be enabled in the settings. Finally, it is recommended that everyone prioritize experiencing the Marksman mode and the new ranked features, and use the biubiu Accelerator to optimize the online experience.