Single-player games like CTHON
Below are 17 single-player Steam games similar to CTHON, 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 CTHON page.
Ranked picks
- 1
STRAFE: Gold Edition
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
STRAFE® is the worlds bloodiest roguelike first-person shooter! Featuring mind melting secrets and persistent gore that allows you to paint levels red with the excessive entrails of your enemies. 30+ weapons, 20+ enemies, & a red hot soundtrack.
- 2
HAZAMA_QUEEN
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
In the year 202X, the world is "YAMI"...! To save the world, go to hell and kill all the demons. Yes, just like ordering a Frappuccino at a cool cafe!
- 3
Forgive Me Father
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
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?
- 4
Prodeus
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
Prodeus is a first-person shooter of old, re-imagined using modern rendering techniques and technology. Experience the quality you’d expect from a modern AAA game, designed with retro aesthetics and gameplay that invoke the tech-imposed limits of older hardware.
- 5
Vomitoreum
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
Vomitoreum is an FPS Metroidvania with a focus on atmosphere and horror, inspired by the paintings of Zdzisław Beksiński.
- 6
Nightmare Reaper
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
Blast through a cursed nightmare solo or with up to 3 friends. A retro-inspired FPS where looter shooter weapons meets boomer shooter chaos and rogue-lite elements.
- 7
CULTIC
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
Death is only the beginning. Crawl from your grave and gear up to fight your way through the ranks of a mysterious and twisted cult. You, your guns, and your dynamite will have to shoot, slide, blast, duck, dodge, and maybe throw a gib or two to survive in this old-school-inspired shooter.
- 8
Turbo Overkill
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
Enter Paradise as Johnny Turbo—half-metal, half-human, all-murder machine. Clean up the streets with a chainsaw leg, 15+ weapons and your hovercar as you battle the rogue AI Syn, rival bounty hunters and cyberpunks aplenty. Apogee’s most outrageous FPS since Duke Nukem 3D. Good hunting, Sir!
- 9
Wolfenstein 3D
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
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
Quake
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
Developed by the award-winning id Software, Quake® is the ground-breaking, original dark fantasy first-person shooter that inspires today’s retro-style FPS games. With Quake (Enhanced), experience the authentic, updated, and visually enhanced version of the original.
- 11
System Shock
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
A first-person fight to the death in the depths of space!
- 12
Zero Tolerance
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
Created by Randel Reiss Kill or Be Killed If this 3D game doesn't your adrenaline pumping, nothing will. Zero Tolerance has you killing alien terrorists who want to annihilate your defense colony.
- 13
DOOM
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
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.
- 14
Corridor Z
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
Be quick or be undead! Ordinary high school, zombie outbreak and the bunch of survivors in a run for life.
- 15
3079 -- Block Action RPG
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
3079 is a futuristic, open-world action first-person role playing game. All areas, buildings, items, quests and characters are randomly generated. You will find unique lands & challenges. I hope you enjoy it!
- 16
Blake Stone: Aliens of Gold
Single-player alternative to CTHON — playable solo, no multiplayer required. Shares Action with CTHON.
Wolfenstein 3D took you into the past, thrusting you into a world at war. Blake rockets you into the future where a sinister madman, using genetics to create an army of bizarre creatures, is waging war on Earth. Blake has more of everything!
- 17
Reign of Victory
Single-player alternative to CTHON — playable solo, no multiplayer required.
Build and trade, fight and conquer or raid and steal in this multiplayer open-world RPG where you can choose your own adventure by taking part as a villager, knight or outlaw!