Single-player games like Quartermain and the Cult of Cthulhu
Below are 10 single-player Steam games similar to Quartermain and the Cult of Cthulhu, 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 Quartermain and the Cult of Cthulhu page.
Ranked picks
- 1
CASTILLO: The Nine Circles
Single-player alternative to Quartermain and the Cult of Cthulhu — playable solo, no multiplayer required. Shares Action with Quartermain and the Cult of Cthulhu.
CASTILLO: The Nine Circles is an FPS Collectathon. Collect power shards in each circle of hell to unlock new areas and progress on your quest through 9 diverse worlds. Embark on a journey through the circles of Hell, using unique abilities and weapons.
- 2
Catechumen
Single-player alternative to Quartermain and the Cult of Cthulhu — playable solo, no multiplayer required. Shares Action and Adventure with Quartermain and the Cult of Cthulhu.
171 A.D., a great evil lurks in the shadows of ancient Rome. Face demons and beasts of unspeakable horror. Follow your divine quest through the catacombs and unravel an engrossing tale that tests you against the profane and unholy, stepping into the legacy of a Guardian of Truth.
- 3
Quadrillion
Single-player alternative to Quartermain and the Cult of Cthulhu — playable solo, no multiplayer required. Shares Action with Quartermain and the Cult of Cthulhu.
Unleash Dread in WWI's Trenches: Quadrillion Descend into a nightmare WWI, where monstrosities lurk in war-torn landscapes. This haunting FPS blends historical fiction with dark fantasy for a chilling experience.
- 4
Forgive Me Father
Single-player alternative to Quartermain and the Cult of Cthulhu — playable solo, no multiplayer required. Shares Action with Quartermain and the Cult of Cthulhu.
Forgive Me Father is a dark retro horror FPS set in a comic book style world inspired by the novels of H.P. Lovecraft. As the only one left with full senses, you begin a journey in search of answers and relief. How long can you last?
- 5
Project Warlock
Single-player alternative to Quartermain and the Cult of Cthulhu — playable solo, no multiplayer required. Shares Action with Quartermain and the Cult of Cthulhu.
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.
- 6
DUSK
Single-player alternative to Quartermain and the Cult of Cthulhu — playable solo, no multiplayer required. Shares Action with Quartermain and the Cult of Cthulhu.
Battle through an onslaught of mystical backwater cultists, possessed militants & even darker forces as you attempt to discover just what lurks beneath the Earth in this retro FPS inspired by the '90s legends.
- 7
Painkiller Overdose
Single-player alternative to Quartermain and the Cult of Cthulhu — playable solo, no multiplayer required. Shares Action with Quartermain and the Cult of Cthulhu.
The critically-acclaimed and award-winning FPS franchise is back! Packed with tons of fast-paced, adrenaline-fueled single player and multiplayer action, Painkiller Overdose brings with it 6 innovative new demonic weapons, mind-bending physics, lightning-player maps, over 40 demented and sickly-twisted monsters from Hell and gigantic end...
- 8
Wolfenstein: Cyberpilot
Single-player alternative to Quartermain and the Cult of Cthulhu — playable solo, no multiplayer required. Shares Action with Quartermain and the Cult of Cthulhu.
Wolfenstein®: Cyberpilot™ brings virtual reality to the revolution against the Nazis.
- 9
Wolfenstein 3D
Single-player alternative to Quartermain and the Cult of Cthulhu — playable solo, no multiplayer required. Shares Action with Quartermain and the Cult of Cthulhu.
World War II rages. The Nazis are planning to build an unstoppable, mutant army. On a mission to steal the secret plans, you were captured and imprisoned. Now, a lucky break gives you the chance to escape, but a maze of passages and trigger-happy Nazis stand in your way.
- 10
DOOM
Single-player alternative to Quartermain and the Cult of Cthulhu — playable solo, no multiplayer required. Shares Action with Quartermain and the Cult of Cthulhu.
Now includes all three premium DLC packs (Unto the Evil, Hell Followed, and Bloodfall), maps, modes, and weapons, as well as all feature updates including Arcade Mode, Photo Mode, and the latest Update 6.66, which brings further multiplayer improvements as well as revamps multiplayer progression.