Top similar games like Flat Mars:

Dreadfire is a thrilling ultraviolent FPS game. Shred your enemies with a large destructive arsenal. Destroy them until none remain. They won't stop until you're dead.

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!

Twilight Manor: Roguelite FPS is a bloody and brutal shooter game that features beautiful cutscenes, jaw-dropping map design and an upgrade system you can carry over into Newgame+! Uncover the secret behind the mansion as you battle through bosses and enemies with a wide arsenal of weapons

Sinned is a fast-paced retro FPS game situated within the darkest depths of hell where you will fight demonic legions and Pandemonius, Lord of Hell himself!

In this cyberpunk FPS, players navigate a dystopian city corrupted by a malevolent computer virus. You, armed with weapons and skills, unravels the secrets behind CyberCorp's experiments.

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.

Crush the cult of Astaroth and vanquish her hellspawn, make them squeal and hide where they came from. Enjoy a Fresh Look & Old Fun in this arcade horror FPS game inspired by the legends of the 90s.

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.

BRUTAL First Person Shooter, dismember hordes of enemies while exploring ancient forest to conquer the main boss.

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.

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.

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.

Introducing the Master Levels for DOOM II. Twenty never-before-seen levels all with the same acid drenched, hell spawned horror of the originals. Each was created by independent designers and supervised by the demented minds of id Software. You might as well forget about seeing the light of day ever again.

A massive demonic invasion has overwhelmed the Union Aerospace Corporation's (UAC) Mars Research Facility, leaving only chaos and horror in its wake. As one of only a few survivors, you must fight your way to hell and back against a horde of evil monsters.

Hell’s armies have invaded Earth. Become the Slayer in an epic single-player campaign to conquer demons across dimensions and stop the final destruction of humanity. The only thing they fear... is you.

Step into the boots of Grayson Hunt after a crash landing on an old resort planet forces him to make a hard choice: survival or revenge. Execute masterful kills with Bulletstorm: Full Clip Edition’s unique combat system that rewards you for performing the most creative and deadly kills imaginable.

VERSEBREAK is a fast-paced elemental FPS where you are a Crusader. Use the powers of the four elements to fight your way through a bloody crusade against a demonic cult that controls the whole world.

RAGE 2 brings together two studio powerhouses – Avalanche Studios, masters of open world insanity, and id Software, creators of the first-person shooter – to deliver a carnival of carnage where you can go anywhere, shoot anything, and explode everything.

A fast-paced First Person Shooter inspired by the classics of the genre. Shoot and kick your way out of the war-torn planet to survive the attack of the space undead. Zombie blood has never splashed so good!

Protos Magos is a Spellcrafting FPS with fast-paced combat. Explore a medieval setting and blast your way through a horde of demons. Create custom spells to suit your unique play style.

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.

In 2527 in a dystopian world, Jake, an engineer and bounty hunter, travels to the far reaches of the universe through a wormhole. With the help of his friend Roy, Jake's goal is to exterminate the replicator robots that threaten the Confederate planets.

DOOM: The Dark Ages is the prequel to the critically acclaimed DOOM (2016) and DOOM Eternal that tells an epic cinematic story of the DOOM Slayer’s rage. Players will step into the blood-stained boots of the DOOM Slayer, in this never-before-seen dark and sinister medieval war against Hell.

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.

👹 Puny humans have entered your domain and think they can chase you out of it – prove them wrong. Use your fiery breath and incredible agility to defend your Cathedral for as long as possible and let this fast-paced, arcade, endless arena FPS transport you back to the 90s! 👹

Hatchpunk is a retro first person shooter with unique visual style. You have a gun in one hand and a chainsaw in other hand. So come out and face the hordes of monsters that have invaded Earth. Use grapple hook for efficient movement. Kill enemies in close combat with chainsaw to regain your health.

Dread Templar is a fast-paced hardcore old-school FPS, combining classic 90s shooter and modern FPS elements. Unlock and combine dozens of weapon upgrades and skills, embrace the Dread Force and obliterate hordes of fiendish enemies. Become the scariest thing in hell and get your revenge!

"The Book" is an old-school-inspired, action-packed first-person shooter set in a pirate world overrun by supernatural entities. Craft and upgrade steampunk-styled magic weapons as you fight your way through.

Welcome to Project R.I.P. , control AI driven Agents in the battle against hordes of demons. Show your skills on the battlefield and on Global Leaderboards in this Singleplayer Horror Survival First Person Horde Shooter.

Take up thy hammer and lay waste to the hordes of hell. Hold fast against the legions of the damned, and smite them into oblivion. Because a new age is coming … an Age of Hell

A demonic invasion has overwhelmed the Union Aerospace Corporation's Mars research facility. As one of only a few survivors, you must fight your way to hell and back against a horde of demons in this award-winning horror/action FPS and reimagining of the original DOOM.

The space station suffered an unknown infection from space, the previously unknown X virus mutates, almost the entire crew of the station is infected, you need to stop the army of mutants until they break through to Earth and the judgment day begins!

Exocide from Apogee (Duke, Turbo, Prey, Max). Humans made superbugs to fight as soldiers. And the bugs turned against us. You're the last Handler, a human+AI robotic team with 4 total arms capable of welding 4 weapons, or one HUGE gun. Stop the super swarms before total human extinction.

ENTER HELL and experience blood and torment the way God intended. Use shotguns, rocket launchers, and more to spread the joy of suffering to your friends and loved ones.

Project Warlock is a first-person shooter that fans of Doom, Hexen, and Wolfenstein cannot miss. It serves you an exploding cocktail of bullets, spells, and monsters. Battle through 60 levels of non-stop action, packed with bloodthirsty enemies and challenging bosses.