Verified patch notes, affected platforms and developer-listed issues.

ARK: Survival Ascended
ASA Unreal 5.5 Upgrade, Anniversary Event, and Astraeos Update are live!
Jun 5, 2025 · Steam update tracked by Buffs & Bugs
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Quick take
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- ARK: Survival Ascended just got an upgrade with the release of Unreal Engine 5.5, bringing improved performance, many bug fixes and quality of life improvements!
- The Astraeos map expands with the new Lemnokis Island, a vast landmass full of new biomes, caves, temples, and even a double miniboss encounter. Explore fresh dangers and hidden secrets across this epic addition.
- We’re also kicking off ARK’s 10-Year Anniversary Event with party-ready loot, a returning fan-favorite structure, the Egg Incubator, and a huge selection of new building pieces. And don’t miss the tropical Club ARK makeover, turning the party island into a sunny celebration hub!
What officially changed
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ARK: Survival Ascended just got an upgrade with the release of Unreal Engine 5.5, bringing improved performance, many bug fixes and quality of life improvements!
The Astraeos map expands with the new Lemnokis Island, a vast landmass full of new biomes, caves, temples, and even a double miniboss encounter. Explore fresh dangers and hidden secrets across this epic addition.
We’re also kicking off ARK’s 10-Year Anniversary Event with party-ready loot, a returning fan-favorite structure, the Egg Incubator, and a huge selection of new building pieces. And don’t miss the tropical Club ARK makeover, turning the party island into a sunny celebration hub!
Whether you're here for the tech upgrades, new content, or anniversary fun, there’s never been a better time to jump back in.
v66 (Steam v66, PS5 66, Xbox v66)- Major version for Servers and Clients - 06/02/2025
ARK 10 Year Anniversary event is now live!
Unofficial server owners can apply this to their servers by adding "-Activeevent=birthday" into their commandline
Added a drop-down option to enable Active Events in Host/Single-Player mode under Game Rules > Rules
More info can be found here
ClubARK has received a new tropical makeover for the anniversary celebration!
Migrated from Unreal Engine 5.2 to Unreal Engine 5.5 to improve Ark's foundation towards better performance, stability, and visual quality
Individual DLC maps are now able to be installed and uninstalled separately from the base game
Added Single Player Backup Saves (beta)
Create, restore, and auto-generate backups across all platforms
Added a new “Performance Only” graphics preset on PC, which disables certain features to boost frame-rate at the cost of visual quality
Dino QOL (as inspired by AvianApexY of Curiosity)
Wild and Tamed creatures will look around curiously
Wild creatures will sometimes play animations
Added returning structure: Egg Incubator
Added new structure pieces, variants and skins:
Thatch (30)
Barn Door, Cellar Door, Double Door, Double Doorway, Fence Foundation, Fence Support, Half Beam, Half Pillar, Half Railing, Half Thin Beam, Half Thin Pillar, Hanger Door, Hatchframe, Ladder, Pillar & Beam, Quarter Ceiling, Quarter Foundation, Quarter Ramp, Quarter Roof, Quarter Stair, Quarter Wall, Ramp, Ramp Corner, Railings, Shallow Sloped Wall, Staircase, Thin Pillar, Trapdoor, Triangle Ceiling, Triangle Foundation
Wood, Stone, Metal (30)
Half Beam, Half Pillar, Half Railing, Half Thin Beam, Half Thin Pillar, Quarter Ramp, Quarter Roof, Quarter Stair, Ramp Corner, Shallow Sloped Wall
Adobe, Tek (22)
Half Beam, Half Pillar, Half Railing, Half Thin Beam, Half Thin Pillar, Inverted Quarter Roof, Quarter Ramp, Quarter Roof, Quarter Stair, Ramp Corner, Shallow Sloped Wall
BTT’s Frontier Showdown, Steampunk Ascent, Wasteland War (30)
Half Beam, Half Pillar, Half Railing, Half Thin Beam, Half Thin Pillar, Quarter Ramp, Quarter Roof, Quarter Stair, Ramp Corner, Shallow Sloped Wall
Bug Fixes
Fixed a client crash that could occur during the Extinction ascension cinematic
Fixed several ground conforming issues with various creatures
Fixed several creatures and saddles having messed up LODs at low graphic settings
Prevented the Aquatic trait from appearing on flyers (when bAllowFlyerDinoSubmerging is false)
Fixed “Join Last Session” sometimes not working as intended
Fixed inability to “drop all” on a creature inventory when the player’s inventory is slot capped
Fixed lots of structure lights causing shadow flickering
Fixed water flickering after transferring a character to a different server
Fixed Snow Owl’s dive bomb impacting mid air with a Companion equipped
Fixed various visual issues with the preview window while painting a structure
Fixed Pyromane not becoming doused from touching water after teleporting out of a Vacuum chamber
Fixed visual artifacting when using spyglass and scuba helmet
Fixed Industrial Cooking Pot gaining water without irrigation
Fixed gamepad inability to rotate on the spot with a Tuso, now works with A/X
Fixed Reaper and Basilisk bury mounts not matching the terrain
Fixed Biogrinder not providing mutton when grinding Ovis
Fixed Extinction’s Sunken Forest location where creatures would spawn in the mesh
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