Single-player games like Beyond Citadel
Below are 16 single-player Steam games similar to Beyond Citadel, 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 Beyond Citadel page.
Ranked picks
- 1
The Citadel
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action and Indie with Beyond Citadel.
The Citadel is a brutal first person shooter, and a love letter to classic games such as Marathon, Doom and Wolfenstein 3d. Descend into the depths of a dark citadel, and fight through 6 Episodes and 30 levels of action packed with 6 challenging bosses. Go forth, Martyr.
- 2
MULLET MADJACK
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action and Indie with Beyond Citadel.
MULLET MADJACK is a HIGH-OCTANE-ACTION SHOOTER that put you directly inside a CLASSIC ANIME. Pick your favorite weapon and reach the last floor; Beat your best time or try again. Haste makes waste… OF YOUR ENEMIES!
- 3
Ion Fury
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action and Indie with Beyond Citadel.
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!
- 4
Turbo Overkill
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action and Indie with Beyond Citadel.
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!
- 5
METAL EDEN
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action with Beyond Citadel.
An adrenaline-rush sci-fi FPS. A HYPER UNIT ASKA is sent on a suicide mission to rescue citizens' COREs from MOEBIUS, an orbital city turned into a deadly trap. Dive into cybernetic warfare, face the ENGINEERS, and uncover the secrets of METAL EDEN.
- 6
Project Warlock II
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action and Indie with Beyond Citadel.
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
SATAN
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action and Indie with Beyond Citadel.
Experience the thrill of retro boomer shooters in this action-packed game where you'll battle hordes of demons and face the ultimate challenge: Satan himself. Relive the glory days of classic shooters with intense gameplay, a variety of weapons, and relentless enemies.
- 8
Warhammer 40,000: Boltgun
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action and Indie with Beyond Citadel.
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.
- 9
Quake
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action with Beyond Citadel.
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.
- 10
Wolfenstein: The New Order
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action with Beyond Citadel.
Wolfenstein®: The New Order reignites the series that created the first-person shooter genre. Wolfenstein offers a deep game narrative packed with action, adventure and first-person combat.
- 11
SOMA
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action and Indie with Beyond Citadel.
From the creators of Amnesia: The Dark Descent comes SOMA, a sci-fi horror game set below the waves of the Atlantic ocean. Struggle to survive a hostile world that will make you question your very existence.
- 12
Titanfall - The Final Hours
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action with Beyond Citadel.
Written over the past four years, journalist Geoff Keighley ("The Final Hours of Portal 2") chronicles the making of TITANFALL from Respawn Entertainment. This longform app features never-before-seen photos, video and concept art from early development versions of the game.
- 13
Receiver 2
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action and Indie with Beyond Citadel.
Receiver 2 simulates every internal part of each firearm based on manufacturer schematics and gunsmithing resources. Learn exactly how each sidearm works, including how to load and unload them, clear malfunctions, and operate their safety features.
- 14
ULTRAKILL
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action and Indie with Beyond Citadel.
ULTRAKILL is a fast-paced ultra-violent retro FPS that combines the skill-based style scoring of character action games with the unadulterated carnage inspired by the best shooters of the '90s. Rip apart your foes with varied destructive weaponry and shower in their blood to regain your health.
- 15
SIGNALIS
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action and Indie with Beyond Citadel.
A classic survival horror experience set in a dystopian future where humanity has uncovered a dark secret. Unravel a cosmic mystery, escape terrifying creatures, and scavenge an off-world government facility as Elster, a technician Replika searching for her lost dreams.
- 16
SWAT
Single-player alternative to Beyond Citadel — playable solo, no multiplayer required. Shares Action with Beyond Citadel.
Combines FPS & TPS. It puts players against some of them. And the winning team gets points and coins. There are 3 game modes. There are many weapons to pick up.