Single-player games like Deunocta
Below are 8 single-player Steam games similar to Deunocta, 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 Deunocta page.
Ranked picks
- 1
Ion Fury
Single-player alternative to Deunocta — playable solo, no multiplayer required. Shares Action and Indie with Deunocta.
3D Realms, creators of Duke Nukem 3D, Prey, and Max Payne, team up with Voidpoint to bring back the legendary Build Engine, famous for classic shooters like Duke Nukem 3D, Shadow Warrior, and Blood. Fast-paced FPS combat across huge, secret-packed levels. Ion Fury is the real deal!
- 2
Devil's Desk
Single-player alternative to Deunocta — playable solo, no multiplayer required. Shares Action and Indie with Deunocta.
Bring down devilish corporate overlords in this Office-Core Retro FPS. Use office supplies (and much more) to slay your way through and escape hellish work spaces. Dismantle the Devil's workforce of twisted salary men, corrupted custodians, and possessed office sundries! Time to get that promotion
- 3
The Fortress of Dr. Radiaki - Fancy Edition
Single-player alternative to Deunocta — playable solo, no multiplayer required. Shares Action with Deunocta.
Experience the cult hit that doesn't quit, Dr. Radiaki is here to tickle your funny bone until it really hurts. An unapologetic sense of fun and non-stop action meets in an unforgettably bizarre adventure!
- 4
CTRLSINK
Single-player alternative to Deunocta — playable solo, no multiplayer required. Shares Action and Indie with Deunocta.
A submerged post-apocalyptic retro-style FPS set in a world swallowed by the ocean after a human/AI war. Blast through flooded facilities, battle corrupted machines, explore radioactive ruins, and uncover the last buried secrets of humanity’s collapse.
- 5
HEADCUTTER
Single-player alternative to Deunocta — playable solo, no multiplayer required. Shares Action and Adventure with Deunocta.
HEADCUTTER is a sci-fi spaghetti western FPS with brutal combat, destructible environments, and lots of gore. Track targets as a space bounty hunter, explore maps with multiple routes, and use the crunchy gunplay to cut their heads off so you can get your money!
- 6
Project Warlock II
Single-player alternative to Deunocta — playable solo, no multiplayer required. Shares Action and Indie with Deunocta.
Adrenaline-pumping gore retro funhouse that’s full of guns, magic, demons, vertical arenas, 3D visuals, 2D sprites, and heavy metal music. Inspired by FPS classics like Quake and Doom 64, Project Warlock II is the explosive boomer shooter sequel you were too shy to ask for.
- 7
GAL VS VILLAGE
Single-player alternative to Deunocta — playable solo, no multiplayer required. Shares Action and Indie with Deunocta.
GAL VS VILLAGE is an GAL like old-school FPS. You play as Kessenji “Blood-sucker” Yui, infiltrate the village, and must bring the situation under control. Move at high speed, swing your knife, blast away with the shotgun, and drive away the supernatural!!!!!!
- 8
Warhammer 40,000: Boltgun
Single-player alternative to Deunocta — playable solo, no multiplayer required. Shares Action and Indie with Deunocta.
Load up your Boltgun and unleash the awesome Space Marine arsenal to blast your way through an explosion of sprites, pixels and blood in a perfect blend of Warhammer 40,000, frenetic gameplay and the stylish visuals of 90’s retro shooters.