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{{Quotation|The [[Newscaster]]|The New York Oracle wants to wish you and your loved ones a safe Maelstrom, and a joyous winter!}}

'''Seasonal events''' are temporary events in ''[[Deadlock]]'' to celebrate holidays.

== Halloween ==
The 2024 Halloween event ran from October 31 to November 7. The 2025 Halloween event ran from October 24 to November 12.

It added 4 Halloween masks for heroes and pumpkin models for boxes, statues and [[Denizens]]. The Halloween masks were randomized.

=== Gallery ===
<gallery>
File:Halloween Masks.png|Halloween masks
File:Halloween Masks Heroes.png|Heroes wearing Halloween masks
File:Halloween Mask Heroes 2.jpg|Heroes wearing Halloween masks
</gallery>

== Winter ==

=== 2025 ===
[[File:Winter 2025 souvenir.png|150px|thumb|right|Winter 2025 souvenir]]
The 2025 Winter event ran from December 15 to January 20.

During the event, all players received a unique [[Snowball]] item that could be leveled up by winning matches with different Heroes, which also unlocked ornaments for the Christmas tree in the [[Hideout]]. Players who participated in the Winter challenge also unlocked a souvenir above their fireplace in the [[Hideout]].

The [[Shopkeeper]] also received new holiday-themed lines for all heroes, and [[Drifter]] has holiday-themed songs when using Eternal Night.

=== 2024 ===
[[File:Christmas menu.png|thumb|2024 Winter main menu]]
The 2024 Winter event ran from December 17 to January 17.

It added a new main menu animation, remixed music for the menu and shops, and Winter-themed decorations in the streets, buildings, and [[Curiosity Shop]]. The [[Shopkeeper]] featured a Santa mask and unique lines. In addition, the [[Denizen|Denizens]] were modelled after snowmen. [[Dynamo]] and the [[Newscaster]] had unique holiday voice lines.

All the mainline [[Heroes]] received unique Winter skins, which could be unlocked by completing their respective challenge. A list of which skins were unlocked during the event can be seen in the "Showcase" tab in the player's profile, next to the "Match History" button. Players who participated in the Winter challenge also unlocked a snow globe above their fireplace in the [[Hideout]].

==== Skin challenges ====
As the winter skin challenges weren't listed in-game or in patch notes, the challenges were discovered and shared by the player community over the duration of the event.

These challenges could be achieved only in a normal match or a labs match, not in a custom game or against bots. The conditions for each challenge must be completed in '''one match.'''

Winter skins were tracked in-game by a Santa hat icon in the main menu that showed how many skins had already been unlocked. Heroes with Winter skins had the Santa hat icon and a red background in the Heroes page.

The skins can be tested in sandbox mode or custom games (with cheats enabled) with the [[console commands]] <code>ent_fire player setbodygroup hat,1</code> and <code>ent_fire player setbodygroup xmas,1</code>.
{| class="wikitable"
!Hero
!Challenge
|-
|{{HeroIcon|Abrams}}
|Kill 5 enemies with melee last hits
|-
|{{HeroIcon|Bebop}}
|Reach 100 bomb stacks
|-
|{{HeroIcon|Dynamo}}
|Suck 3+ enemies with a single Singularity
|-
|{{HeroIcon|Grey Talon}}
|Deal 850+ spirit damage at once to one or more players, five times
|-
|{{HeroIcon|Haze}}
|Kill streak of 7 enemies
|-
|{{HeroIcon|Infernus}}
|Hit 3+ enemies at once with Concussive Combustion
|-
|{{HeroIcon|Ivy}}
|Silence 6 enemies total with T3 Air Drop bombs (McGinnis' turrets also seem to count as an enemy)
|-
|{{HeroIcon|Kelvin}}
|Capture 2+ allies and 2+ enemies at once with Frozen Shelter
|-
|{{HeroIcon|Lady Geist}}
|Do a Soul Exchange when you have less than 100 health
|-
|{{HeroIcon|Lash}}
|Affect 4+ total players with Death Slam (both hooked and slammed on enemies count)
|-
|{{HeroIcon|McGinnis}}
|Destroy 9 structures (Guardians/Walkers/Shrines/Patron)
|-
|{{HeroIcon|Mirage}}
|Get 3 Djinn's Mark kills
|-
|{{HeroIcon|Mo & Krill}}
|Use the Combo ability to get a kill or assist ("stack") on each player on the Enemy Team
|-
|{{HeroIcon|Paradox}}
|Kill 3 enemies while you're airborne
|-
|{{HeroIcon|Pocket}}
|Hit 4+ enemies at once with Affliction
|-
|{{HeroIcon|Seven}}
|Kill an enemy with Storm Cloud's thunderbolt
|-
|{{HeroIcon|Shiv}}
|Kill 3 enemies with Killing Blow
|-
|{{HeroIcon|Vindicta}}
|Kill 2 enemies in the same use of Flight* 
|-
|{{HeroIcon|Viscous}}
|Hit 3 enemies with one use of Goo Ball
|-
|{{HeroIcon|Warden}}
|Damage every enemy player with Binding Word at least once
|-
|{{HeroIcon|Wraith}}
|Throw 6 cards in 10 seconds or less
|-
|{{HeroIcon|Yamato}}
|Kill 2 enemies with one Shadow Transformation
|}
<nowiki>*</nowiki>Note: Vindicta's challenge can also be completed by killing an enemy while flying and then getting killed mid-flight, as the game seems to count the player's death as a kill.<ref>2024-12-21 - AbsoluteBreaker on Reddit.com/r/DeadlockTheGame - [https://www.reddit.com/r/DeadlockTheGame/comments/1hj97bc/vindictas_skin_unlocked_by_dying/ Vindicta's skin unlocked by... dying?]</ref> Getting killed may also work for Seven's challenge.

==== Gallery ====
<gallery>
File:Curiosity Shop winter.png|Winter Curiosity Shop
File:Winter jungle.png|Winter Jungle Denizens
File:Winter skins unlocked.png|All winter skins unlocked in the Heroes page
File:Abrams Winter.png|Abrams
File:Bebop winter.png|Bebop
File:Dynamo winter.png|Dynamo
File:Grey Talon winter.jpeg|Grey Talon
File:Haze winter.png|Haze
File:Kelvin winter.png|Kelvin
File:Lady Geist winter.jpg|Lady Geist
File:Lash winter.png|Lash
File:Infernus winter.png|Infernus
File:Ivy winter.png|Ivy
File:McGinnis winter.png|McGinnis
File:Mirage winter.png|Mirage
File:Mo and Krill winter.png|Mo & Krill
File:Paradox winter.png|Paradox
File:Pocket winter.png|Pocket
File:Seven winter.jpg|Seven
File:Shiv winter.png|Shiv
File:Vindicta winter.jpg|Vindicta
File:Viscous winter.png|Viscous
File:Warden winter.jpg|Warden
File:Wraith winter.png|Wraith
File:Yamato winter.png|Yamato
</gallery>

== April Fools ==
The 2026 April Fools day event enabled multiples of the same hero in a match.

== Trivia ==

* The Winter [[The Curiosity Shop|Curiosity Shop]] has a list of all the heroes who have been "nice" or "naughty". Only [[Lash]] is marked as naughty.

== References ==
[[Category:Gameplay]]
[[Category:Skins]]
[[Category:Events]]