Top similar games like The Citadel:

Prepare for terror in this ground-breaking classic old-school FPS. Following the destruction of Time you are left to battle in this horrific hellhole of multilevel interconnected missions populated by gruesome grotesque creatures.

3D Realms, creators of Duke Nukem 3D, Prey, and Max Payne, are excited to team up with Voidpoint to bring back the legendary Build Engine, famously known for classic first-person shooters like Duke Nukem 3D, Shadow Warrior, and Blood. Ion Fury is the real deal!

V.R.G. is a FPS cross between a retro-style and a modern-style , Defeat enemies and get combos to improve operability, and eat scatter pieces of meat to recover.

The Apogee Throwback Pack is a collection of four classic Apogee Software titles all in one kick ass package. Blast your way across the galaxy as British Special Agent Blake Stone in "Aliens of Gold" and "Planet Strike", then take on an ancient evil menace as the H.U.N.T in "Rise of the Triad".

HROT is a single-player retro FPS set in a small socialist country neighboring Soviet Union (Czechoslovakia) after an unspecified disaster in 1986. Those times were dark and terrifying and so is the game.

Perilous Warp is a fast-paced indie retro-shooter inspired by the classic 3D-actions. Communication with a distant space colony has been lost, and you bravely step into the teleporter with the desire for glorious adventures. But do not expect to win in a heartbeat!

Classic First Person Shooter style game. Like the good old days. An action game focused on speed, gore, guns, and metal music. Inspired by the 90s’ classics with modern visuals and audio!

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.

COP BASTARD is a classic first-person shooter set in early 90s Japan, offering non-stop action inspired by action movies.

Developed by id Software, and originally released in 1993 and 1994, the definitive, newly enhanced versions of DOOM + DOOM II are available as a combined product.

Explore the gloomy rooms of a sci-fi base as a doomed marine, the sole survivor of the portal experiment. Save humanity as you did in the 90s with your trusty shotgun, make your way through ominous corridors inhabited by the shadows of sinners and evil spirits.

Brutal Fate is a fast-paced ultra-violent retro first-person shooter inspired by 80's and 90's sci-fi movies. It blends the best features of classic shooters with some modern aspects, making it an unique mix.

Blast, slice and shred through your enemies in this hardcore FPS inspired by the icons of the '90s, powered by the legendary Quake-1 Tech. Taking place in a realm left to rot, take up arms, unearth long-forgotten secrets and hunt down the Guardians of the Old World.

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.

Sinned Arena is a classic arena shooter inspired by timeless 90s games. You are trapped in Hell with other unfortunate souls, fighting among each other for demons twisted pleasures. Fight for your way out this dark place but beware, demons aren't there just to watch.

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.

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!

COVEN is a hyper-violent retro FPS where your path of vengeance will take you across time and space. Destroy your enemies and eat their flesh.

Selaco is a brand new original shooter inspired by classics, featuring thrilling action set pieces, destructibility, smart enemies and a fleshed out story taking place within an immersive game world.

In the cute cardboard world, something went horribly wrong... Use the magical pencil, a good old shotgun, and various other weapons as well as the strength of your mighty boots, to uncover the dark truth and find out WHY WOULD CARDBOARD... BLEED?

Become the ultimate badass in Trepang2: A gory, action-packed FPS set in the near future. Unleash all hell on your enemies, dodge bullets and leave a trail of destruction in this hardcore and frenetic shooter.

Play the enhanced version of the original game released on the Nintendo 64 in 1997. Years have passed since you stopped Hell’s invasion of Earth. Quarantined for humanity’s safety, the UAC research facilities on Mars were abandoned and forgotten...until now.

You are part of an elite group of operatives called HUNT (High-risk United Nations Taskforce), and you must stop a maniac cult leader from killing millions of people. You are equipped with high-tech weaponry and magical instruments that defy description to invade the monastery and stop the madness.

Dino Trauma introduces you to a secret laboratory somewhere in eastern Europe where gore and dinosaurs aren't unusual things. Retro FPS inspired by the '90s legends.

Join BRUTAL JOHN and DOGE in a violent retro FPS adventure as you confront the greedy crypto-miners and their allies. Blast your way through hordes of enemies and stop the crypto-mining menace for good. Prepare for an adrenaline ride that pays homage to the best shooters of the '90s.

Arthurian Legends is a medieval first person action game set in the land of Albion during a time of myth and legend. Battle hordes of Saxons, demonic beasts, the undead and worse in thy quest to save Albion from The Masters of the Old Religion.

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?

BL0W-UP is a single-player movement shooter inspired by the best shooters of the '90s. Dive into a world of vibrant visuals and colorful gore, crush your enemies efficiently and get to the end of the stage as quickly as possible. Are you ready to become the ultimate avenger?

Hell has invaded Earth, and to save it, you must battle mightier demons with even more powerful weapons. This beloved sequel to the groundbreaking DOOM (1993) introduced players to the brutal Super Shotgun, the infamous Icon of Sin boss, and more intense FPS action.

A SHORT and sweet pixelated low fidelity 90s throwback hyper-fast action shooter. Survive and fight through a city overrun with manufactured monstrosities, biomass horrors, and a military authority trying to purge everything living. Heavy metal / techno soundtrack featuring BOD Music

KARM brings back '90s FPS look and feel in a lovecraftian world. Try to discover what lies behind the cult and make sure you don't lose your sanity!

First person shooter. In the style of famous games like Doom, Quake, Duke Nukem and Call of Duty. You have to play as the only survivor after the crash of the pilot of a combat helicopter, fighting with a huge army of enemies. Improve your skills and upgrade your weapons. All in your hands.

Breach enemy stronghold in dread Siberian wastelands before insurgents can open gates to Samozbor dimension.

Make mincemeat out of cults and chop heads with machetes! Old school shooter staples and gals, and a familiar difficulty level. Ye shall witness a new struggle!