Single-player games like Outer Darkness
Below are 8 single-player Steam games similar to Outer Darkness, 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 Outer Darkness page.
Ranked picks
- 1
Lovecraft's Untold Stories
Single-player alternative to Outer Darkness — playable solo, no multiplayer required. Shares Action and Indie with Outer Darkness.
Lovecraft’s Untold Stories is an action roguelite with RPG elements. Explore randomly generated levels based in Lovecraft's stories, fight cultists and all kinds of monsters from the Mythos, improve your gear, solve puzzles, and find clues and knowledge to defeat the Great Old Ones.
- 2
Alchemists
Single-player alternative to Outer Darkness — playable solo, no multiplayer required. Shares Action and Indie with Outer Darkness.
Alchemists is a Co-Op horror game that can be played with at least a minimum of 1 and a maximum of 4 players. Your goal is to expel the evil spirit from cursed places by completing the 4 Element ritual. Destroy the monster alone or with your team using your tools.
- 3
Earl vs. the Mutants
Single-player alternative to Outer Darkness — playable solo, no multiplayer required. Shares Action and Adventure with Outer Darkness.
Save humanity in a mutant-ridden apocalypse! Dive headfirst into Earl vs. the Mutants, a high-octane top-down survival action-roguelite set in the aftermath of a nuclear apocalypse.
- 4
Source of Madness
Single-player alternative to Outer Darkness — playable solo, no multiplayer required. Shares Action with Outer Darkness.
Source of Madness is a side-scrolling dark action roguelite set in a twisted Lovecraftian inspired world powered by procedural generation and AI machine learning. Take on the role of a new Acolyte as they embark on a nightmarish odyssey.
- 5
VOIN
Single-player alternative to Outer Darkness — playable solo, no multiplayer required. Shares Action and Indie with Outer Darkness.
Crafted by a solo developer, VOIN is a first-person hack-and-slash. Cleave through hordes of enemies in fast-paced combat. Explore dark fantasy realms filled with secrets and dangers. Discover powerful gear and weapons, and face menacing bosses in your quest to cleanse a broken world.
- 6
Sharded World
Single-player alternative to Outer Darkness — playable solo, no multiplayer required. Shares Action and Indie with Outer Darkness.
Sharded World is a reversed bullet hell, rogue-lite, ARPG game combining simple gameplay and great rpg progression. Each level has its own unique features and challenges. Upgradable characters, weapons and orbs. Challenges, daily quests, and leaderboards. Fight, get stronger and defeat the Lich!
- 7
Whisper Mountain Outbreak
Single-player alternative to Outer Darkness — playable solo, no multiplayer required. Shares Action and Indie with Outer Darkness.
Escape room meets co-op survival horror. The year is 1998, and an ancient curse has been unleashed, trapping everyone on Mount Bisik. Alone or with up to 4 players, you must explore, find clues, figure out a way to escape...and survive the horror.
- 8
Eldritch
Single-player alternative to Outer Darkness — playable solo, no multiplayer required. Shares Action and Indie with Outer Darkness.
Eldritch is the original imsim roguelike: a first-person action game inspired by roguelikes, immersive sims, and H. P. Lovecraft.