Top similar games like Demon Seed:

World War Z is a heart-pounding coop third-person shooter for up to 4 players featuring massive swarms of hundreds of zombies, focused on fast-paced, gruesomely spectacular action.

Cursed Dawn is a wave survival FPS featuring complex maps packed with secrets, dynamic spawns, and hordes of zombies to turn into gory mulch. Plan your defense, stay on the move, and master the maps. Remember: Nowhere is safe, death is assured, how long until you're zombie chow?

A world where the living envy the dead. Cities are plunged into darkness, the world into silence. You are part of the extraction team, but this time you are trying to save not just people, but humanity itself. Gear up, trust your comrades, and dive into the darkness to save humanity!

A horror social deduction game where you and your friends take on the roles of police officers on a critical mission. But there is a zombie among you that can transform at will. Can you trust your friends?

A photorealistic multiplayer horror game where you have to survive increasingly difficult nights. Unless you'd rather be the nightmare of other players ?

Set in the zombie apocalypse, Left 4 Dead 2 is a co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.

Stay close together and use teamwork to fight through hordes of infected and other mutated freaks while navigating between saferooms.

Hellbreach: Vegas is a Wave-based First-Person Shooter for 1-4 players, made with passion by a one man dev team! Set your loadout, kill, and earn cash. Take a spin on the various slot machines and level up to improve your survival chances. Are you ready to try your luck?

Bodycam: Deadsplit is a gritty online co-op multiplayer shooter for 1–4 players, where you face relentless zombie waves, hold your ground, and beat the clock.

A fast-paced sci-fi shooter where a failed experiment unleashes mutated horrors inside a secret research facility. Armed with experimental weapons, you must fight through swarms of twisted enemies, and survive the collapse of a world-breaking project.

Zombiefielders! Your mission is to open portals to attract stronger zombies and evacuate from the field. Work with your manager to reduce operational risks and get paid for completing your contract

Codename CURE II is an upcoming co-operative first person shooter set in the aftermath of a zombie apocalypse. Create an elite military squad with up to five players and fight your way through hordes of zombies in a variety of dynamic objective missions.

Back 4 Blood is a thrilling cooperative first-person shooter from the creators of the critically acclaimed Left 4 Dead franchise. Experience the intense 4 player co-op narrative campaign, competitive multiplayer as human or Ridden, and frenetic gameplay that keeps you in the action.

The chances of you surviving this all out war of society and the undead are slim to none. Already, there are millions of the walking dead shambling about, searching for food to eat. There's no known cure. One bite can possibly end it all for you. However, you aren't alone in this nightmare.

Bloodlit is a hardcore first-person shooter designed to unite slow-paced oppressive survival horror tension with fast-paced reflex-driven close-quarters combat. Carve your path through the blood and ruin. Regret is for the dead.

A fast-paced, wave-based zombie shooter set in an alternate 1980s dystopia. Call in airstrikes, deploy support bots, upgrade wild weapons, and survive the horde—solo or with friends. No grinding. No paid DLC. Just pure, chaotic fun.

Survive the living dead for as long as you are able! Room Invaderz is a wave-based survival game where you and your comrades kill zombies, earn points, and do your best to upgrade your arsenal to see how long you can delay the inevitable.

6-player co-op survival horror at its finest! Free updates, free special events and a ridiculous amount of fun!

From Valve (the creators of Counter-Strike, Half-Life and more) comes Left 4 Dead, a co-op action horror game for the PC and Xbox 360 that casts up to four players in an epic struggle for survival against swarming zombie hordes and terrifying mutant monsters.

In this genre-bending space shooter, you will be faced with infinite waves of alien attack ships, giant capital ships, many intense races to complete, classic first person shooter modes to play & much more. Do this alone or with friends in multiplayer.

Take on a city overrun by zombies with 1 to 4 players online — co-op or PvP! Hold the line against running, leaping, spitting hordes. Fight by day, hunt in the dark of night. Tear off limbs and unlock cosmetics with every kill. Stand together... or hunt each other down.

Armed militaries are requested to clean an area infested by zombies. On each round you don't now if you will be a zombie or a soldier, so use the skills and items that was given to you and keep alert.

A co-op zombie horde shooter set in a West Yorkshire town gone very, very wrong. Fight off waves of the undead, collect coins, buy bigger weapons, and uncover the dark secret rotting at the heart of Brumley. Up to 8 players. No survivors expected.

Sin Survivor is a wave-based, first-person co-operative or single-player shooter based in a post-apocalyptic world overrun with blood-hungry, satanic demons.

Tear through endless waves of supernatural enemies in this co-op horror horde shooter. Play solo or with up to 4 players, unleash god-like Miracle powers, supercharge your arsenal, and survive devastating boss encounters on Sker Island.

Tales of Terror invites you to delve into a chilling co-op horror survival experience. Unite to face unique enemies, navigate through visually stunning and treacherous levels and navigate the unknown. —Your ultimate challenge awaits: escape, if you can!

Corpse City throws you into a relentless fight for survival against endless waves of the undead. Feel the tension rise with every shot, the adrenaline rush as you’re cornered, and the thrill of making it out alive. How long can you survive the nightmare?

Strike Team Delta is a gripping first-person shooter set in a post-apocalyptic world. Battle hordes of undead, team up with friends, and reclaim our world. Survival is in your hands.

Survive endless waves of the undead in Purge Directive — a 1–4 player online co-op FPS. Earn points per kill, upgrade your arsenal between waves, and see how long you and your squad can hold the line.

Based on the community award-winning Doom2 mod with the same name by the same creator, UNLOVED is reimagined in the Unreal Engine 4 to bring forth the unspeakable terror in new ways. Play coop with your friends, increase your skills, mod your weapons and face the horror that this unearthly place holds...

Limsod is an FPS set in a post-apocalyptic universe in which you must fight for survival in a world infested with flesh-eating zombies. Upgrade your equipment and play in a variety of maps and game modes.

London is falling. Are you prepared? The Last Blight is upon us. It was foretold. For the second time in history, a great plague has shrouded London in a fog of death. Big Ben tolls as thousands of unprepared die, or worse, are infected by a sickness more gruesome than death.

UNFROST is a co-op Antarctic horror FPS about hunting ancient entities known as the Riftborne. Gather evidence, survive extreme conditions, prepare a nuclear strike, and extract before impact.

The Horizon scientific research laboratory is a deceptively quiet place. When you came round, there were hundreds of the living dead all around you. Use both hands and your head: never stop shooting, climb up pipes and ladders, grab hold of ropes, and throw everything you find at the zombies.

The devil wears a human face. Unmask and exorcise it—with friends. A 4-player co-op horror game where you hunt demons lurking in a village. Observe behavior, detect environmental shifts, and use items to expose the truth. But beware: should you misjudge, the consequences will be severe.