ARK just released on PC, PlayStation 4 and Xbox One and already a new expansion pack called Aberration has appeared on Steam, as spotted by the ever-vigilant @RobotBrush.

　　According to the listing, the expansion will be available in October. You may check out a gallery of screenshots and overview of features below. Stay tuned for our review of the game, due to be published soon.

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　　Waking up on ‘Aberration’, a derelict, malfunctioning ARK with an elaborate underground biome system, survivors face exotic new challenges unlike anything before: extreme radioactive sunlight and environmental hazards, ziplines, wingsuits, climbing gear, cave dwellings, charge-batteries, and far more, along with a stable of extraordinary new creatures await within the mysterious depths. But beware the ‘Nameless’: unrelenting, Element-infused humanoids which have evolved into vicious light-hating monstrosities! On Aberration, survivors will uncover the ultimate secrets of the ARKs, and discover what the future holds in store for those strong and clever enough to survive!

　　Owners of ARK's "Season Pass" or "ARK: Explorer’s Edition" will get exclusive in-game Aberration-themed cosmetic item skins, immediately!

　　- The Aberration Helmet, formed from the damaged ARK's obsidian-like underground rock, creates an imposing presence for Survivors who wear it.

　　- The Aberration Sword, forged from the Element Crystals that run within the deepest chambers of the ARK, emits a subtle glow to strike fear into your enemies.

　　AN ARK GONE AWRY

　　Aberration places survivors on a damaged ARK: its internal atmosphere has leaked away, resulting in a harsh surface with intense radiation, and a plethora of lush biomes underground. With the maintenance systems of this ARK malfunctioning, the many hazards, creatures, and nature of the environment present a thrilling new world to explore and master.

　　TAME NEW CREATURES

　　The intense radiation of Aberration has led to incredible genetic mutations, resulting in new creatures with amazing abilities! Among others, clamber up walls & glide through the air on the back of a camouflaging chameleon-like ‘Rock Drake’, keep the dark at bay with a friendly ‘Lantern Pug’, grab and toss multiple creatures simultaneously with a massive ‘Cave Crustacean’, or -- if you are talented enough to tame one -- command the vile ‘Nameless Queen’ to impregnate your foes with a horrifying reproductive chest-burster!

　　CRAFT OVER 50 NEW ITEMS

　　New tools are on-hand to survive on the world of Aberration, while opening up many possibilities for new competitive and cooperative scenarios. Traverse the ARK using cave-climbing picks, gliding wingsuits, and ziplines. Learn advanced engrams to dominate the harsh environment, protect yourself with hazmat outfits, charge lanterns, explosive rounds, batteries, glowsticks, railguns and much more. Thrive by gathering new resources, using fishing baskets, gas collectors, fortify your home within the caverns using cliff structures, and much more!

　　CONQUER NEW CHALLENGES

　　Earthquakes, radiation exposure, gas leaks, and Element chambers are among the many hazards that survivors will learn to grapple with Aberration’s varied biomes, both aboveground and below the surface. But among the greatest challenges on this ruined ARK is the hierarchy of unrelenting Nameless, requiring constant vigilance & Charge Energy to defend against! And in the deepest depths of Aberration, their terrifying -- yet somehow familiar -- master awaits… will YOU be among the survivors powerful enough to face him?