Patch Date and Time - March 17th, 2026 @ 10AM - 1PM PACIFIC

Greetings MechWarriors!

This month’s update includes the release of the Annihilation booster pack, 'mech adjustments,, quirk adjustments, and more!

As always, a 2 week in-game Patch Science Sale will go live shortly after the patch and include all applicable items for testing.

'Mechs in-game and new 'mechs releasing are subject to future balance changes and tuning, so get out there and do the science so we can hear your feedback!

 The MechWarrior Online Team.

Annihilation Booster Pack

Releasing this patch, these six mechs bring more Railguns or Arrows to the field. Gear up with the latest additions with these XL weapons.

Weapon Changes

• Moved the targeting anchor for LRMs, ATMs, Thunderbolts, and Arrows higher on mechs. This will help even out the spread between leg and side torso damage on these weapons.

• Increased Arrow IV ammo per ton to 18 (from 8)

Note: Upon creating the Annihilation Booster Pack we noticed that, in order to create viable mech variants, Arrow IV ammo quirks were needed on almost all of them. Rather than having to place this quirk on multiple variants, we instead chose to drastically increase the Arrow IV base ammo instead.

• Modified Clan and Inner Sphere Arrow IV damage to 9 splash + 13 direct + 9 splash (from 10/10/10)

• Increased Clan and Inner Sphere NARC to 0.1 damage (from 0.0)

Note: By giving the NARC damage, players will receive hit confirmation when successfully striking a target with NARC. Players shot by NARC will receive an indicator of where the shot came from, like other weapons do.

Store Changes

• Shadow Hawk IIC released for MC

• Bat Wing, Blue Moon, Cat Eye, Creeper Eye, Ghost Urbie, Owl Face, Pink Skull, Pumpkin Face, and Robot Face decals released for MC

Note: These decals were special decals added in previous events and were missed in previous waves of releasing them for standard currency.

Bug Fixes

• Fixed an issue that would prevent players from being able to purchase STD and XL engines 60-95 on certain Urbanmech and Stalker variants

Mech Changes

• Revamped Timber Wolf Bounty Hunter 2 missile mounts

• Symmetrized Nightstar NSR-9P torso ballistic mounts

• All Banshee variants now mount energy weapons from top down.

Quirk Changes

Mist Lynx

• MLX-PRIME

• Removed -10% Missile cooldown from SO8

• Increased MG RoF to 100% in SO8 (from 75%)

• Added 100% LMG/MG/HMG ammo to RA

• Added 50% APG ammo to RA

• Added -10% Cooldown to SO8

• Added 15% range to SO8

• MLX-A

• Removed -20% Energy cooldown from SO8

• Increased MG RoF to 100% in SO8 (from 75%)

• Added 100% LMG/MG/HMG ammo to RA

• Added 50% APG ammo to RA

• Added -20% Cooldown to SO8

• MLX-B

• Added 15% Missile range to SO8

• MLX-C

• Removed -10% ER Laser cooldown from SO8

• Increased cooldown to -20% in SO8

• Added -15% Laser duration to SO8

• MLX-D

• Added 50% LMG/MG/HMG ammo to RA and LA

• Added 25% APG ammo to RA and LA

Panther

• PNT-KK

• Removed -30% Energy Cooldown

• Removed -15% Missile Cooldown

• Added -20% Cooldown

Ebon Jaguar

• EBJ-PRIME

• Removed 5% Missile Velocity from RT and LT

• Removed -2.5% Energy Heat from LT

• Increased Ballistic Cooldown in RA and LA to -10% (from -5%)

• Added 7.5% Velocity to RT and LT

• Added -5% Heat to LT

• Added -30% Spread to So8

• Added 75% Ballistic Ammo to So8

• EBJ-A

• Removed -15% UAC20 Jam Chance from So8

• Removed 20% Machine Gun RoF from So8

• Increased UAC Jam Chance in RT to -20% (from -10%)

• Added -15% UAC Jam Chance in So8

• Added -5% Heat in So8

• Added 25% Ballistic Velocity to So8

• EBJ-B

• Removed -5% ERPPC Heat in RT

• Increased Energy Cooldown in RA and LA to -7.5% (from -5%)

• Added -5% Heat in RT

• Added 15% Pulse Laser Range to So8

• EBJ-C

• Removed 5% Missile Velocity from RT and LT

• Removed -10% UAC Jam Chance from RA and LA

• Removed -5% Missile Spread from So8

• Increased UAC Jam Chance in So8 to -40% (from -20%)

• Added 5% Velocity to RT and LT

• Added 7.5% Velocity to RA and LA

• Added -10% Spread to So8

• EBJ-D

• Removed -2.5% Heat from LT

• Removed 5% ER Laser Range from So8

• Increased Ballistic Cooldown in RA and LA to -5% (from -2.5)

• Added -7.5% Heat in LT

• Added 10% Range in So8

• Added UAC20 HSL +1 to So8

• Added 75% Ballistic Ammo to So8

• EBJ-EC

• Removed -2.5% Laser Duration from RA and LA

• Removed -15% Ballistic Cooldown from So8

• Removed -10% Missile Cooldown from So8

• Removed -5% ERPPC Heat in RT

• Increased UAC Jam Chance in LT to -20% (from -10%)

• Added -7.5% Energy Cooldown to RA and LA

• Added -5% Heat to RT

• Added -10% Cooldown to So8

• Added -80% UAC Jam Chance to So8

• EBJ-S

• Added -100% UAC Jam Chance to So8

• Added -25% Spread to So8

Jagermech

• JM6-DD

• Added 100% LAC Ammo

Naga

• NGA-PRIME

• Removed Arrow IV Ammo +4 from So8

• NGA-B

• Removed Arrow IV Ammo +4 from So8

• NGA-II-PRIME

• Increased Cooldown in LT to -10% (from -5%)

• Increased Velocity in CT to 20% (from 15%)

• Increased Cooldown in So8 to -25% (from -10%)

• NGA-II-A

• Increased Cooldown in RT to -10% (from -5%)

• Added -10% Laser Duration to RA

• Added 10% Velocity to LT

• Added -10% Heat to So8

• NGA-II-B

• Increased Cooldown in LT to -10% (from -5%)

• Added 10% Velocity to RT

• NGA-II-H

• Increased Cooldown in RT to -10% (from -5%)

• Added -5% Laser Duration to RA

• Added 10% Velocity to LT

• Added -15% Heat to So8