From the creative minds behind the System Shock, Thief and Underworld® series. Enter The Stygian Abyss, a dangerous, highly interactive dungeon world. Mix and match dozens of combat, stealth and magic skills to develop your own unique style of play. Become The Ascendant.
Recent Reviews:
Mixed (22) - 40% of the 22 user reviews in the last 30 days are positive.
All Reviews:
Mixed (355) - 41% of the 355 user reviews for this game are positive.
Release Date:
Nov 15, 2018

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Recent updates View all (84)

February 26

Hotfix for Update 2

A small update today to address the following items:

  • Crash fixes
  • Fixed issue where the quest “Repel Typhon’s Army” sometimes didn’t spawn enough enemies to complete the quest.
  • Fixed issue where the day would advance every time the player returned to Marcaul.
  • Fix for loading screen sometimes saying “Input:Interact Next Tip”
  • The doors on Hap’s cart now work properly on low quality mode

If your current version of the game is up to date, the download will be 380mb.

Thank you for playing Underworld Ascendant!
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February 14

Update 2 - Player Journey & Gameplay Improvements

Underworld Ascendant
Update 2 Build Notes

Video Message From The Dev Team:

Thank you for your continued support of Underworld Ascendant!

We have been hard at work on Update 2 and have focused our efforts on the overall structure of the Abyss, the player journey, AI and other gameplay improvements. We believe these changes will significantly improve the overall player experience, especially when starting a new game.

We hope you enjoy this update and please continue to provide your feedback.

The Stygian Abyss renovated
  • The world is now a series of interconnected levels, accessible through The Grand Staircase. Updated quest flow now focuses on important narrative quests that highlight both new and refined story and content, while allowing the player to freely explore the environment and optional side-quests.
  • As a result of this major change, we highly recommend that you start a new game to experience it. That said, if you want to start from where you left off, your old save games will still work and you will start at a roughly similar place in the new story progression.

Player experience improvements highlights
  • Updated enemy patrol paths and lighting pass in all levels to enhance tactical stealth gameplay, and enemy population overhaul/refinements on all main quests.
  • New and streamlined story elements along main critical path, with supplemental story elements moved to explorable space.
  • The Vault of Nyx, the final level encounter, gameplay and clarity improvements.

Meta Game updates
  • The Doom Counter has been refined to better ramp the type and difficulty of creatures that appear, and now allows players to complete the game without having to set it back more than once in an average playthrough.
  • Players no longer need to gain Faction Favor or Influence to trigger the final encounter of the game, though Faction Favor still provides benefits in trade.
  • New games can now choose a difficulty level. All old save games will be treated as “Normal” difficulty.

Save Game System
We made some additional enhancements and refinements to the save game system based on your feedback:
  • Players can now use F5 to quick save and F9 to quick load said quick save.
  • Players are now asked for confirmation if they are about to overwrite an existing save.
  • Clarity pass on the text in the Save menu to improve usability.
  • Also a load game panel clarity pass. It will also now show difficulty of each save game.

  • Updated enemy patrol paths and AI behavior models to improve their reaction to player actions
  • Enemies will no longer do more than one in-combat emote in a row, which makes them much more aggressive.
  • Enemies will flee less often than before.
  • Animuses now alert all nearby undead when they are being attacked.
  • Lizardmen casters will no longer cast while on the ground or getting up.
  • Lizardmen will now be more aggressive.
  • Better wandering for deep slugs and rats.
  • Skeletons will no longer attack torches that damage them. Also reduced torch damage radius for when creatures walk by them.
  • Enemies now have more personality in their idle time.

Loot and Items
  • Standard trunks are now smaller to reflect that they don’t hold treasure on the level of the mighty Typhon chests. Removed the sparkly “treasure” effect when you open a trunk. Celebrations are for actual treasure chests.
  • Trunks that are too low-level to hold much loot will now (rather than being so empty) have more filler items such as pots, which will sometimes contain coins.
  • Clarity pass on item descriptions to make it easier to understand what they do.
  • Magical items now have a different color name so they stand out more in your inventory.
  • Player’s speed percentage is now listed in the inventory screen so you can tell if items you have equipped are slowing you down (or speeding you up).
  • Item tooltips for equipment that improves the wearer’s armor percentage now include a notation about that.
  • Updated Aelita’s trade menu to make it easier to understand how much silver you will get for a trade, and how much silver Aelita has available to trade.
  • When you mouse over an item, it will be compared to the same type of item you have equipped, if any.
  • Right clicking on items in your inventory behaves the same as double clicking. This also applies to trade where it will move it to/from the offer table.
  • When moving a stack of items within their inventory, the player is no longer prompted to pick how many they like to move. To see that pop up, hold down shift and click on the stack of items.

Gameplay Including Movement, Combat, Stealth, Magic and More
  • Additional refinements to combat feel and responsiveness, including removing an animation step so that players aren’t moving forward after an attack ends, which tended to interrupt combat flow.
  • Creatures may be knocked down during combat and get back up to continue the fight. Make sure to finish your foes!
  • Several creature types now have small weaknesses to extended melee combat. This will make encounters a bit more eventful in cases where the player’s attacks are underpowered for their foe.
  • Chains and ropes will be much easier to swing on.
  • Fixed issue where you would get stuck on chains in certain situations.
  • Removed some lights that didn’t have an extinguishable source and were making stealth difficult in spots.
  • Further refinement of player movement
  • If the player walks into a heavy object (like a table) it no longer knocks over. Instead the player will step on top of it. This also applies to crates! Running into stuff will still knock it over, of course.
  • There are more mana motes in the world. Use the Mana Sight skill to spot them and keep your supply full!
  • Player’s maximum mana is increased.
  • Fixed the Blink spell getting stuck on light obstructions (e.g. crates), and made it more reliable in general. Adjusted it to Level 3 instead of Level 2.
  • Fixed the Magic Fist spell’s collision with physics objects to apply forces as intended.
  • Fixed Outcasts’ fleeing behavior so they don’t smoke bomb away from the player if they are allies (as with summoned or charmed Outcasts).
  • Fixed long-press of the interact button on doors (as if you were trying to pick the door up), to lock or unlock them.
  • Friendly lizardmen now show up on the map. You will also get a warning saying “Saurians are your allies!” if you accidentally hit one.
  • General pass on tooltips to ensure they appear where expected and make sense.

Levels and Quests
  • Players will be able to reach the lower depths of the Abyss more quickly in the game’s overall progression, if they choose to do so.
  • Removed the intro sequence with Cabirus so players can get to the action faster.
  • Implemented subtitles for the ending cinematics.
  • A lighting pass across the entire game to better support gameplay.
  • More improvements to the main quest line to make sure there are no dry spots.
  • Narrative and clarity pass on the Vault of Nyx so players can better understand what needs to be done to complete the final mission in the game.
  • Players who miss the “Cautious First Steps” feat in Pluto’s Gate can still qualify for it by running any subsequent quest undetected.
  • Removed the “Weaponless” Side Bounty from the rotation as it’s not applicable to the new Quest flow.
  • New challenges and rewards to discover in all levels!
  • Lots more holes filled!

  • Fixed the Haste skill so only characters with the skill get its benefit.
  • Some special attacks now knock the targeted enemy back.
  • Skill Points are now called Skill Points on the Skills screen, (not Memora).
  • Clarity pass on skill descriptions to make it easier to understand what each skill does and how to use them.
    ○ Known issue: the Mighty Blow, Cleave, and Fists of Iron skill chain descriptions sometimes leave out that they apply to axes & maces, swords, and unarmed attacks respectively.
  • Added a reminder on the Skills screen that the player needs to perform Feats (found in the Compendium) to earn skill points.
  • Fixed the Unseen Dash and Dash Farther skills’ handling of rough terrain. Unseen Dash should skim over terrain, while Dash Farther will hop over gaps entirely.
  • Increased the bonus to mantel height granted by the Athletic Ascent skill.
  • Improved clarity for skill descriptions and skill panel.

  • General performance improvements to improve load times, increase FPS and reduce hitching.
  • Players can now cycle through hints on loading screens by hitting the E button.
  • Brightness bar on character creation extended so you can make the game even brighter.
  • A Compendium now appears in the Tab menu. The Hints and Secrets tabs have been folded into the Compendium. In addition, one section lists all the available Feats in the game and tracks which feats have been completed. Another section will track all of the foods the player has eaten and their effects.
  • New VFX on Memora.
  • New VFX on Animus Hearts.
  • Players will no longer sound like they are plunging deep beneath the water when they splash through a puddle.
  • Fix for “Bark & Bite” achievement not firing right (the Ripper was getting the achievement instead).
  • (Trade) Fix for splitting stacks during trade destroying stacks.

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About This Game

From the creative minds behind the acclaimed Ultima Underworld®, System Shock and Thief series, in Underworld Ascendant®, Paul Neurath and Warren Spector's OtherSide Entertainment challenges you to think creatively in an interactive sandbox environment.

You are summoned by a mysterious figure to The Stygian Abyss, a dangerous and constantly evolving dungeon world imperiled by the looming threat of the beast Typhon. To save this world, and yours – you must overcome complex challenges, uncover lost secrets and gain favor with factions to maximize your knowledge and strength. Utilize your environment to stack the odds in your favor. Devise the ideal plan to overcome the challenges you face or dive in and think on your feet.

Each decision holds great opportunity and grave consequence. What you leave behind will be engraved on the lives of others. Assuming you survive

Enter a fully-realized dungeon realm, from the village of Marcaul to the Vault of Nyx and seven other large-scale levels to explore, each comprising a labyrinthine assembly of rooms, passages, halls and ruins connecting massive cavern complexes. Interact with useful flora and physics-based traps. Encounter fantastic creatures like Lizard Men, opportunistic Outcasts, and fearsome Mind Cripplers – all with unique abilities that can be used to your advantage.

Tailor your skillset by combining more than 75 skills from three different archetypes (Combat, Stealth, Magic) that you can mix and match to develop a unique hero who is truly your own. Craft over a hundred different types of spells using the runic spell crafting system. The game sets the challenge, the solution is up to you.

Become embroiled in an epic plot, as rival factions vie for dominance in struggles that ebb and flow across the realm. The decisions you make have consequences on events and the world around you. Unique challenges, dynamic enemy spawning, variable Outcast-built structures and a degrading world state that varies enemy population provide a dynamic world to play through in many different ways.

Set out on more than 70 quests and numerous Side Bounties that reward you for avoiding detection, going unarmed and more, providing many opportunities to explore, replay and test unlimited strategies and playstyles.

Earn rewards and unlock skills through resourceful, unboxed gameplay and ingenious performance. Solve challenges in unique ways and push yourself to experiment.

System Requirements

    • Requires a 64-bit processor and operating system
    • OS: 64-bit Windows 7, 64-bit Windows 8 (8.1) or 64-bit Windows 10
    • Processor: Intel CPU Core i5-6600 @ 3.3GHz / Ryzen 3 1300X
    • Memory: 8 GB RAM
    • Graphics: Nvidia GPU GeForce GTX 960 (3GB)/ AMD R9 280 (3GB)
    • DirectX: Version 11
    • Storage: 25 GB available space
    • Requires a 64-bit processor and operating system
    • OS: 64-bit Windows 7, 64-bit Windows 8 (8.1) or 64-bit Windows 10
    • Processor: Intel CPU Core i7-6700/ AMD Ryzen 5 1500x
    • Memory: 12 GB RAM
    • Graphics: Nvidia GPU GeForce GTX 1060 (6GB)/ Radeon RX 480 (8GB)
    • DirectX: Version 12
    • Storage: 25 GB available space

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