From the creative minds behind the acclaimed Ultima Underworld® series. Return to The Stygian Abyss in Underworld Ascendant®, the action RPG designed to express creativity through playstyle choices in a breathtaking fantasy realm, rife with danger.
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Release Date:
September 2018

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Available: September 2018


Recent updates View all (47)

July 16

July 16 Weekly Update

Morning everyone! Time for another weekly update:

So this week, as some of you may already know, we've just started the first round of External Playtesting! Those of you with access should be able to see the PLAYTESTERS ONLY board underneath Underworld Ascendant. If you received an email with playtest instructions but do NOT have access to this board, please DM or email us at so we can set up your forum account to receive access.

We're also going to be working long hours this week to address some of the nitty gritty issues that just need us to sit down and get it down. No one likes to sit at a computer for a week and fiddle around finding the magic number that makes the game feel right, but someone has to do it eventually :)

More concretely, Joe recently updated all of our item descriptions ingame so that the player can start making informed decisions before they start eating food they've found off the ground. As a reminder, food will be a somewhat rare but occasionally game-changing item, depending on how it's used. Be wary of food that may have been left out for too long, or hold onto food that may come in handy later, just not for you...

UI is still in the process of getting an overhaul, as well as turning our attention to optimizing the game. A lot of our levels (although perhaps not as apparent in the Backer Alpha available) are ENORMOUS with lots of interconnected areas and sprawling tunnels, as well as populated with unpredictable AI and some randomized environments. It'll be interesting for us to find a balance for all of this...

In the meantime, we still want to hear more about any discoveries or discussions you're having regarding the Backer Alpha! Link us to clips or streams you've had of the game so we can peek at what you've seen; we hear a few of you have stumbled across legendary armor or weapons as early as the tutorial level of the game, which made for some interesting puzzle solving. :)

The Dev Team
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July 11

We Made The Games Machine Cover!

Underworld Ascendant was on the cover, featured article and interview in the Italian gaming magazine The Games Machine:

"An adventure that, 25 years after its birth, is still fresh, intriguing and engaging."
We are so excited to have been chosen for this honor! 😍
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About This Game

From the creative minds behind the acclaimed Ultima Underworld® series, in Underworld Ascendant®, Paul Neurath and Warren Spector's OtherSide Entertainment is innovating upon the series’ signature player-authored gameplay in bold new ways and bringing the ‘immersive sim’ genre forward in a breathtaking fantasy realm, rife with danger and full of intrigue.

Return to The Stygian Abyss in Underworld Ascendant®, the action RPG designed to maximize player choice. Journey through the unfamiliar. Unlock your creative potential. 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, rendered in expressive detail, where simulated systems make logical sense and creative experimentation is amply rewarded. 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.

Become embroiled in an epic plot, as rival factions vie for dominance in struggles that ebb and flow across the realm. Every decision you make has unique consequences on events and the world around you. How will you navigate The Stygian Abyss?

Launch yourself into fluid, intense combat. Cast powerful magic to defeat the enemy. Use stealth and subterfuge to avoid enemies and obstacles altogether. Freely mix and match across dozens of distinct combat, stealth & magic abilities, plus your choice of weapons, magical items and useful provisions to create a unique hero who is truly your own.

Unlock your creative potential with the Improvisation Engine. Experiment with a wide array of skills and magic. Manipulate your environment – and creatures who reside in it – to stack the odds in your favor. The game sets the challenge, the solution is up to you. Craft your own adventure.

Explore constantly-evolving environments, offering dynamic opportunities and deepening challenges. Set out on a wide variety of quests: from intrigue and manipulation among conflicting Factions to opposing the growing influence of the undead. Delve into lost areas, collect rare objects, alter the environment, and more.

Earn rewards and unlock skills through exceptional performance and creative solutions. 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 i5-2400 3.1GHz / AMD FX-6300 3.5 GHz
    • Memory: 6 GB RAM
    • Graphics: Nvidia GPU GeForce GTX 760, GTX 1050 / AMD R9 280
    • DirectX: Version 11
    • Storage: 45 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
    • Memory: 16 GB RAM
    • Graphics: Nvidia GPU GeForce GTX 1080
    • Storage: 45 GB available space
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