Underworld Ascendant

Underworld Ascendant

OtherSide Entertainment · 2018 · RPG, Immersive Sim, Action, Adventure, Indie

PC
Mixed42% · 694 📉 Recent reviews down 33%37Metacritic
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Screenshots

About Underworld Ascendant


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

KEY FEATURES:
A DEEPLY IMMERSIVE WORLD
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.

A HERO TO CALL YOUR OWN
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.

CONSTANTLY EVOLVING UNDERWORLD
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.

EMERGENT QUESTS
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.

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

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

✦ AI summary

Players acknowledge Underworld Ascendant's ambitious attempt to capture the spirit of classic immersive sims with interesting enemy AI and physics-driven problem-solving that rewards creativity, but the experience is significantly undermined by persistent technical issues including buggy physics, AI pathfinding problems, map clipping, and exploitable glitches that break puzzles and combat encounters. The game appeals primarily to devoted fans of Looking Glass Studios titles willing to overlook substantial jank, though even they note it falls well short of those classics and recommend caution d

Not recommended May 23, 2026
I think this is the only Steam game I ever refunded. I impulse bought it while it was heavily discounted based on the pedigree of its creators and was unaware of its initial production woes/reception. But even after some updates, a lot of those issues were still present, and a lot of things that seemed to be in the description when I bought it were just not a thing in the game. The enemy AI really is interesting, the best way to fight seems to be to go up some stairs or around a corner, which the enemy will then get stuck on. Quite a few walls, you can kind of just glitchwalk up them like in Double Dragon 1 on the NES instead of solving their respective puzzles.
9 found this helpful
Recommended Apr 12, 2026
I recommend this only for super-mega fans of old Looking Glass studios games (Thief 1/2, System Shock 1/2, Deus Ex) who can look past some jank. It isn't anywhere near the quality of their classic titles but there is an interesting and (barely) functional game here. Technical problems still exist but this is in a playable state and has some unique mechanics. I get that they were going for "realism" with the physics, but they are quite buggy and you can often take damage or die from things like running into a crate or door with too much momentum, and climbing on stacks of multiple objects usually sends the whole stack careening across the room. The leveling system consists of completing "feats" and/or side-missions which is rather un-intuitive but once I leveled a bit and collected higher-level equipment this all started to click. Overall this feels like an experimental Thief fan-mission collection with a rudimentary RPG system bolted on, it's not great but I've somehow been enjoying it.
9 found this helpful
Not recommended Apr 5, 2026
I’ve always been a huge fan of the Ultima series. Although I haven’t completed every installment, I’ve played most of them extensively. So when I first heard about Ultima Ascendant, it immediately caught my attention. After reading a few reviews mentioning technical issues, I was still eager to experience it for myself. After spending some time with the game, I found that it has a solid foundation. The story and core systems are engaging, the graphics are impressive, and the physics and environmental interactions are generally satisfying. There’s clearly a lot of potential here. However, the experience is held back by some noticeable flaws. I encountered several bugs, particularly related to map clipping, which disrupted immersion. Additionally, the combat system felt somewhat dull and lacking in depth, making encounters less enjoyable than they should be. In my opinion, Ultima Ascendant feels like it could have been a great game with more polish. With continued developer support and refinement to address these rough edges, it could evolve into a much stronger experience.
7 found this helpful
Recommended Apr 8, 2026
Underworld Ascendant is an ambitious attempt to resurrect the design philosophy of classic immersive simulations, aiming to give players a high degree of freedom within a reactive, system-driven world. Developed by OtherSide Entertainment and published by 505 Games, it draws direct inspiration from the legacy of Ultima Underworld, prioritizing experimentation and player-driven solutions over linear progression. The intent is clear from the outset: this is meant to be a sandbox of possibilities where creativity is rewarded, and where problems can be approached from multiple angles rather than solved in a single prescribed way. Set within the Stygian Abyss, the game places you in a sprawling underground realm filled with competing factions, hidden secrets, and environmental hazards. Instead of pushing players down a fixed path, it encourages exploration and improvisation. You are given a wide array of tools—melee weapons, ranged attacks, environmental interactions, and a rune-based magic system—and left to figure out how best to use them. This open-ended structure is where the game’s vision shines. There are moments when solutions feel genuinely personal, when you succeed not becaus…
5 found this helpful
Not recommended Jun 20, 2026
What an f'ing mess!
1 found this helpful
Recommended May 16, 2026
I really really like this game, it deserves much more positive reviews.
1 found this helpful

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