Mutation Invasion

Mutation Invasion is the 15th major update for Fallout 76, following Nuka-World on Tour. It was released on February 28, 2023 alongside Season 12 Rip Daring and the Cryptid Hunt.

Mutation Invasion Events
Creatures and enemies with similar mutations to those from Daily Ops invaded public events. Mutated events took place every full hour until March 21, 2023. They became week-long seasonal events afterwards, similar to The Mothman Equinox and Invaders from Beyond.

Daily Ops
The update added the Charleston Capitol Building, Garrahan Mining Headquarters and Morgantown High School to the Daily Ops map rotation, and aliens as possible enemies.

A new mutation for enemies, Reflective Skin, was also introduced. Enemies glow white for 5 seconds at a time, and if attacked, will reflect 25% of received damage back on the player. Explosive attacks from weapons such as an auto grenade launcher ignore the reflective skin mutation. Weapons with the Vampire legendary mod will not proc and heal players while the enemies are glowing white.

Enemies under the influence of the Resilient mutation can now be killed by the Pain Train perk and thrown weapons.

Season 12
An all-new season, Rip Daring and the Cryptid Hunt, was released alongside the update. It includes various skins and C.A.M.P. objects.

Re-Rolls and Epic Challenges
The update introduced the re-roll feature. It can be accessed from the challenge menu and allows to turn a daily or weekly challenge into a new one, with a 25% chance of the new one becoming an epic challenge. Completing epic daily challenges award 400 S.C.O.R.E., epic weekly challenges award 1,500 S.C.O.R.E.

Players are given one free re-roll a day, with Fallout 1st subscribers receiving a second free re-roll. Additional re-rolls are possible by using re-rollers, which can be obtained as reward from Season 12, or bought from the Atomic Shop.

Characters

 * Steven Scarberry - a new lite ally with ties to the Cult of the Mothman, unlockable during Season 12.
 * Smiling Man - has a 2% chance to be met during the The Smiling Man random encounter.

Consumables

 * Mutated Package: Awarded for completing a mutated event with less than three Fallout 1st members participating in it.
 * Base XP: 500
 * Base Caps, Legendary Scrip x35, Treasury Notes x1
 * {| class="ace-table" style="width:100%"

!Mutated Package contents
 * }
 * Mutated Party Pack: Awarded for completing a mutated event with three or more Fallout 1st members participating in it.
 * Base XP: 500
 * Base Caps, Legendary Scrip x35, Treasury Notes x1
 * {| class="ace-table" style="width:100%"
 * Base Caps, Legendary Scrip x35, Treasury Notes x1
 * {| class="ace-table" style="width:100%"

!Mutated Party Pack contents:
 * }
 * }
 * }

Mutated Events
Rare and ultra-rare plans from mutated events can be obtained from opening mutated packages and mutated party packs. Both can be traded with other players. Once learned, the same plan will not drop again.
 * Rare plans have a 66.6% chance to appear in packages and packs, each invidiual plan has as 2.08% chance.
 * {|class="ace-table center" style="width:100%"

!Rare Plans
 * style="text-align:left"|
 * }
 * }


 * Ultra-rare plans have a 33.3% chance to appear in packages and packs, each invidiual plan has as 12.5% chance. There is also a 2.08% chance of getting instead.
 * {|class="ace-table center" style="width:100%"

!Ultra-rare Plans
 * style="text-align:left"|
 * }
 * }

Weapons
Unlocked upon reaching rank 5 during Season 12:
 * Cold Shoulder: Craftable legendary double-barrel shotgun
 * Quad, Cryo (reduced movement speed for 4 seconds, adds cryo damage,) Paranormal (+50% damage to cryptids)

The following legendary weapons have a 5-25% chance to be obtained from opening mutated packages and mutated party packs:
 * Overkill: Legendary Fat Man - Two Shot, Hitman's, Lightweight
 * Longshot: Legendary hunting rifle - Instigating, Hitman's, Ghost's
 * The Peacemaker: Legendary auto grenade launcher - Juggernaut's, Rapid, Lightweight
 * Boomstick: Legendary missile launcher - Two Shot, Hitman's, Lightweight

Behind the scenes
Bethesda had originally planned to add new crafting components named "Infusion Reagents" as a reward for completing mutated events, which would have used to craft strong temporary buffs. After receiving feedback from the PTS, Infusions were removed and are subject to re-evaluation in the future.

Videos
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