Single-player games like Mortal Dark
Below are 10 single-player Steam games similar to Mortal Dark, 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 Mortal Dark page.
Ranked picks
- 1
Slipgate
Single-player alternative to Mortal Dark — playable solo, no multiplayer required. Shares Action and Indie with Mortal Dark.
Explore the gloomy rooms of a sci-fi base as a doomed marine, the sole survivor of the portal experiment. Save humanity as you did in the 90s with your trusty shotgun, make your way through ominous corridors inhabited by the shadows of sinners and evil spirits.
- 2
Labyrinth Of The Demon King
Single-player alternative to Mortal Dark — playable solo, no multiplayer required. Shares Action and Indie with Mortal Dark.
Venture through the Labyrinth Of The Demon King, solving puzzles and fighting fearsome monsters in an epic quest to track down the demon who betrayed your lord and end its life.
- 3
Project Warlock
Single-player alternative to Mortal Dark — playable solo, no multiplayer required. Shares Action and Indie with Mortal Dark.
Project Warlock is a first-person shooter that fans of Doom, Hexen, and Wolfenstein cannot miss. It serves you an exploding cocktail of bullets, spells, and monsters. Battle through 60 levels of non-stop action, packed with bloodthirsty enemies and challenging bosses.
- 4
Nightmare of Decay
Single-player alternative to Mortal Dark — playable solo, no multiplayer required. Shares Action and Indie with Mortal Dark.
A first-person action horror game set in a nightmarish manor infested with zombies, psychotic cultists, and a horde of other horrors. Utilize an assortment of different weapons in a brutal fight for survival as you try to escape from the Nightmare of Decay.
- 5
CARNAGE OFFERING
Single-player alternative to Mortal Dark — playable solo, no multiplayer required. Shares Action and Adventure with Mortal Dark.
Ultra fast-paced sci-fi FPS where you battle waves of robots and genetically engineered creatures. Upgrade your arsenal, unleash explosive physics, and survive relentless combat.
- 6
Dementium: The Ward
Single-player alternative to Mortal Dark — playable solo, no multiplayer required. Shares Action and Indie with Mortal Dark.
Classic DS horror reborn. Awaken in an abandoned hospital with no memory, no escape and unspeakable horrors lurking in the dark. The horror classic Dementium: The Ward returns, enhanced for 4K display and Steam Deck Verified, where every shadow hides a new threat, and every corridor a new nightmare.
- 7
CARNAL
Single-player alternative to Mortal Dark — playable solo, no multiplayer required. Shares Action and Indie with Mortal Dark.
CARNAL is a fast and challenging retro FPS straight from the mid '90s. The Sons of Anak are opening portals to extract Dark Matter from the "other side". Combat the possessed soldiers, the manifested demons helping them, and any inanimate objects standing in your way!
- 8
WRATH: Aeon of Ruin
Single-player alternative to Mortal Dark — playable solo, no multiplayer required. Shares Action with Mortal Dark.
Blast, slice and shred through your enemies in this hardcore FPS inspired by the icons of the '90s, powered by the legendary Quake-1 Tech. Taking place in a realm left to rot, take up arms, unearth long-forgotten secrets and hunt down the Guardians of the Old World.
- 9
Orph - The Lost Boy
Single-player alternative to Mortal Dark — playable solo, no multiplayer required. Shares Action and Indie with Mortal Dark.
Orph - The Lost Boy is a first-person horror game where you have to find out what happened with your son. Explore an old orphanage, uncover secrets long forgotten and solve puzzles.
- 10
Clausum
Single-player alternative to Mortal Dark — playable solo, no multiplayer required. Shares Action and Indie with Mortal Dark.
Immerse yourself in the bone-chilling world of Clausum. With no means to defend yourself, solve puzzles, explore and uncover the true horrors that lurk within the house. Will you survive, or succumb to the malevolent forces that await you? Face your fears in this immersive psychological horror game.