Top similar games like DOSMan: Space Aliens in Space!:

A retro-style FPS where a kidnapped engineer must fight through a futuristic military base filled with deadly enemies, hidden secrets, and relentless action. Arm yourself, move fast, and survive!

Space bounty hunter Falco must explore the solar system in search of his ex-girlfriend and destroy the Black Star cult. Collect bounties, upgrade your equipment, explore planets, crack wise & fight aliens in this GZDoom-powered Retro-FPS adventure.

Blast through 28 levels in this FPS inspired by classic retro games. Levels span across 3 game modes ending with unique epic boss battles to test your skills. Find hidden medals, discover hidden objectives, and level up your character all while trying to survive an onslaught of nostalgic foes.

The player takes the role of the last soldier of the highly specialized "Gastro Force", elite troopers trained to infiltrate the enormous alien guts to fight them from the inside!

Behind a veil of secrecy the evil Empire is creating a doomsday army - one that, if finished, will become the final cog in the Empire's arsenal of terror and domination. Your Mission? Join the Rebel Alliance's covert operations division, infiltrate the Empire.

BERSERKER'S DOMAIN is a stupid, super fast little FPS with roguelike elements. Inspired by Quake, Doom, ULTRAKILL, and Blood. No load screens, tutorials or menus - just click Play and you're shooting stuff in 5 seconds. Quick play sessions and randomized runs for endless mindless fun.

Interlopers is a solo-developed FPS inspired by retro classics. Wield big guns, shoot hordes of enemy robots, and explore hand-crafted levels set on multiple alien worlds.

Supplice is a stylish throwback shooter inspired by the mid-90s FPS glory days and the legendary Doom modding community. Mixing the retro stylings of 90s era shooters with colorful graphics and frantic gameplay, it creates an experience that's ever so familiar but also exciting and fresh.

An old school first-person shooter inspired by the classics from the 90s. You know the ones! You'll have to explore every corner to find resources that will help you survive. If you've got a keen eye you might even find a secret or two.

Even at this moment, our fashionable city is under assault. Baggy pants, dull suits, sightings of socks with sandals. A message needs to be sent, and it needs to be sent in style... Time to serve some good ol' Fashion Justice!

Meteoroids 3D is a simple action game set in space, which wants to pay tribute to a great game of the eighties: Asteroids. Meteoroids 3D does not pretend to be better, or try to emulate the greatness of Asteroids. We just want to bring a funny and addictive game to the players.

The plushies have gone mad with hunger and rage. In this classic-style FPS, take control of Oslo the Brave Dog, and put a stop to their chaos as you face hordes of cute animals, equipped with a steady hand and an arsenal of strange contraptions.

Klostyn is a sci-fi shooter that stays true to the late-'90s FPS style. The protagonist fights alien creatures and space pirates on a distant planet.

NOT YOUR AVERAGE NIGHT SHIFT... When clocking into work, you find that your business has been overrun by monsters borne from the products on the shelves. Constructed by a mad scientist bent on world domination, only YOU can stop them and save the world by shooting monsters with your Nailgun.

Exosuit is a dynamic shooter in a unique style, where focus is on maximizing fun of gameplay. Game has no plot and the emphasis is only on unbridled action and unusual visual style.

In Alien Boom Boom you will send your enemies flying utilizing a powerful arsenal of weapons and upgrades. The game features a fully voiced story campaign, several distinct levels, several enemies, bosses and frequent player/weapon upgrades that are customizable at the start of each level.

Unleash your inner bear in this over-the-top bullet-hell FPS! Embark on a zany retro-futuristic adventure and destroy oil-thirsty robots with an outrageous arsenal. Transform into a bear, wield unique powers, and embrace the absurd fast-paced action of Bears in Space!

Blast off into Operius DX, a high-speed arcade shooter where you navigate twisting polygonal tunnels, battle waves of enemies, and confront formidable bosses in an endless amount of procedurally-generated levels. How far can you get?

Lock and load into the Starship Troopers universe and join the Mobile Infantry in the most realistic depiction of war ever made! Experience an original story in this action-packed, first-person retro shooter. Would you like to know more?

A 2D Pixel Art Shooter-inspired sci-fi FPS runs on GZDoom. You play as 'Petaka', an angry amnesiac that's on a journey to revive his memory by exploring multiple universes through warp portals. His journey won't be easy because he'll encounter one-eyed aliens and annoying drones that'll attack him.

Dick Shortson – The Detective. You've been hired by a woman to find her missing mother. Grab your gun and uncover the secrets hidden in another godforsaken village. Shoot, solve puzzles, and catch the vibe.

Welcome to Descent™ - 27 levels of the most mind-bending, stomach-churning action game ever. Featuring true 3-Dimensional worlds and six degrees of freedom.

In this first-person rail shooter, originally released in 1983 for the ZX Spectrum by Imagine, take on the role of the pilot of a high tech Ground Skimmer, fighting to protect the lives of escaping refugees from waves of ruthless enemies.

It's the 22nd century: Galactic travel is commonplace, peace is at hand, and the future looks bright - until Goldfire's plan to unleash an army of military mutants shocks the galaxy. Dr. Goldfire, a brilliant bio-scientist whose morbid research led to incredible genetic improvements in humanoids and aliens, has gone power crazy.

Clean Corps is a first person shooter that sees you take the role of a trash collecting superhero created by a child to inspire others to help clean his local beach! Use your vacuum arm to shoot enemies and suck up garbage to clear each level as fast as you can and take out the trash!