Single-player games like Underworld Ascendant
Below are 14 single-player Steam games similar to Underworld Ascendant, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Underworld Ascendant page.
Ranked picks
- 1
Arx Fatalis
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares RPG with Underworld Ascendant.
This critically acclaimed first-person RPG from Arkane Studios takes the player on an amazing journey into the fantasy world of Arx. Arx is wrought with turmoil, brought to the brink of destruction by a violent war.
- 2
Dark Messiah of Might & Magic
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares Action and RPG with Underworld Ascendant.
Discover a new breed of Action-RPG game powered by an enhanced version of the Source™ Engine by Valve. Set in the Might & Magic® universe, players will experience ferocious combat in a dark and immersive fantasy environment. Swords, Stealth, Sorcery. Choose your way to kill.
- 3
Vaporum
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares Action and Indie with Underworld Ascendant.
Vaporum is a grid-based dungeon crawler RPG in an original steampunk setting, inspired by old-school classics of the genre. Stranded in the middle of an ocean, in front of a gigantic tower, the hero has to find out what the place is, what happened there, and most importantly, who he is.
- 4
The Keep
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares Indie and RPG with Underworld Ascendant.
Explore the subterranean depths in this first-person dungeon crawler with real-time combat, a unique rune magic system, exploration, and puzzle solving. This game will awaken memories of what made old-school dungeons so much fun to play while you fight, hunt for hidden treasures, and avoid deadly traps.
- 5
Wizardry 8
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares Adventure and RPG with Underworld Ascendant.
A New Wizardry for a New GenerationThe universe is in the throes of violent upheaval and change. Vast and mysterious forces are preparing for the final confrontation. A small group of heroes from distant lands must plunge into the heart of the maelstrom, to uncover long-forgotten secrets, and bring about a new era.
- 6
Legend of Grimrock
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares Indie and Adventure with Underworld Ascendant.
Use the Dungeon Editor to build entirely new adventures and challenges for other players to solve.
- 7
Deus Ex: Human Revolution - Director's Cut
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares Action and RPG with Underworld Ascendant.
You play Adam Jensen, an ex-SWAT specialist who's been handpicked to oversee the defensive needs of one of America's most experimental biotechnology firms. Your job is to safeguard company secrets, but when a black ops team breaks in and kills the very scientists you were hired to protect, everything you thought you knew about your job...
- 8
Devil Spire Falls
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares Action and Indie with Underworld Ascendant.
The open-world action-RPG, where you can do anything, of your dreams… as if it came out 30 years ago!
- 9
Thief
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares Action and Adventure with Underworld Ascendant.
Garrett, the Master Thief, steps out of the shadows into the City. In this treacherous place, where the Baron’s Watch spreads a rising tide of fear and oppression, his skills are the only things he can trust. Even the most cautious citizens and their best-guarded possessions are not safe from his reach.
- 10
System Shock
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares Action and Adventure with Underworld Ascendant.
A first-person fight to the death in the depths of space!
- 11
Deus Ex: Game of the Year Edition
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares Action with Underworld Ascendant.
The year is 2052 and the world is a dangerous and chaotic place. Terrorists operate openly - killing thousands; drugs, disease and pollution kill even more. The world's economies are close to collapse and the gap between the insanely wealthy and the desperately poor grows ever wider.
- 12
System Shock 2: 25th Anniversary Remaster
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares Action and Adventure with Underworld Ascendant.
System Shock® 2: 25th Anniversary Remaster is a genre defining experience that established innovative game-play mechanics that are a staple of the FPS and RPG genre today. Survive the wretched corridors of the Von Braun. Your training has prepared you for this.
- 13
Arcis Ultima
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares Action and Indie with Underworld Ascendant.
Player finds himself in the war between human race and the invading creatures. You must train yourself, get the very best equipment, recall your past and help human efforts. Otherwise; as the time passes, you may find yourself in a hopeless situation.
- 14
Thick As Thieves
Single-player alternative to Underworld Ascendant — playable solo, no multiplayer required. Shares Action and Indie with Underworld Ascendant.
Thick as Thieves is a stealth-action heist game, playable solo or with a partner in crime in co-op multiplayer. Master the art of thievery through cunning gameplay across a 4-hour campaign in this dynamic new take on stealth.