Top similar games like Fortress of the Undead:
Fortress of the Undead $0.99
"Fortress of the Undead" is an intense zombie survival game. Scavenge for weapons and ammo, fight off hundreds or thousands of zombies with up to 4 players, and try to survive as long as possible.
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UnturnedFREE
You're a survivor in the zombie infested ruins of society, and must work with your friends and forge alliances to remain among the living.

Survivor$0.99
Get ready for an intense survival battle against an ever-growing horde of zombies. Play solo or co-op with friends, test your shooting skills and luck in this relentless combat and see how long you can stay alive.

No More Room in Hell 2$29.99
No More Room in Hell 2 is a terrifying 8 player co-op action horror experience. Find your friends in the dark and survive - in a dynamic, endlessly replayable zombie apocalypse.

Nation Red$2.99
Nation Red is an ultra fast infinite play arena-based shooter providing an exceptional close-quarter battlefield experience. Fight thousands of zombie mutants and their bosses in frantic bloody gameplay while earning close to 100 perks. Fight in Barricade, Survival or Free Play mode.

Whiskey & Zombies: The Great Southern Zombie Escape$9.99
WHISKEY & ZOMBIES is a comedy-adventure brawler/stealther set in a different kind of apocalypse where the only thing that kills the virus is moonshine whiskey. So to survive... just Drink, Fight, and Stay Alive.

Around Us : Zombie Shooter$4.99
Around Us is a multiplayer cooperative zombie shooting game. There are various kinds of zombies and bosses. A lot of weapons and upgrades are waiting for you to unlock via waves. Try to survive the highest wave that no one ever reaches!

Entities$7.99
Dive into horror in Entities. Solo or up to 4-player matches offer dynamic puzzles, relentless entities, and extraction shooter mechanics. Investigate, unlock paths, and survive in dangerous zones as a private operator. Master skill and terror. Are you ready to confront the unknown?

Yet Another Zombie Defense HD$3.99
Top-down zombie shooter with tower defense elements featuring up to 4 players local and online co-op. Build your base by day, defend it by night, put your skills to the test to stay alive as long as possible! Darkness is coming. How long can YOU survive?

Zombie Hunter: D-Day$8.99
The apocalypse is here. Zombies flood in from all sides. You have 80 days until the rescue team arrives. Your desperate struggle for survival begins now!

Matt's Project Zombies: Open World$9.99
Take place on a Deserted Island in the middle of the ocean with very few landmarks left in sight being overrun with the Undead. Face an intense open world while you Craft equipment, Craft shelter and out-smart wildlife, bandits, and online players all while trying to survive!

L.S.S II$2.99
L.S.S the fast paced wave shooter returns with all new game mechanics and enemy types to make the game even faster!

Lord Of Terror$0.99
In a galaxy far away a world is facing doomsday. As nations rise against each other the world is plunged into chaos. Many illegal groups such as gangs and independent militias and demonic cults take the advantage of the situation to expand. Your task is to assassinate a demon dubbed Lord of Terror.

Zombie Builder Defense 2$9.99
Defend against hordes of zombies in this fun filled top-down shooter. Build and upgrade your base, unlock powerful guns, and take on challenging bosses with up to 4 players in online co-op. Play minigames to earn bonuses and survive the zombie apocalypse one night at a time!

Dead Containment$9.99
Dead Containment is an on-rails shooter inspired by classic arcade games. Players fend off the undead as they race through a city under siege, blasting away the horrors that roam the streets using a variety of weapons. Playable solo or online co-op.

Zombie Panic! SourceFREE
Dive into the zombie apocalypse with Zombie Panic! Source: a cooperative, survival-horror first-person-shooter. A fast-paced standalone modification.

Arizona Sunshine®$19.99
Built exclusively for VR, Arizona Sunshine® puts you and up to 3 fellow survivors in the midst of a zombie apocalypse. Survive solo or in co-op, handle weapons with real-life movements, and explore a post-apocalyptic world in VR. Putting the undead back to rest is more thrilling than ever before.

No More Room in HellFREE
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.

Mad Devils: Damned-finitive Edition$14.99
Mad Devils is a 1990's throwback, retro co-op, arcade shooter set in a twisted WWII setting. What does an Allied special forces squad who hunt Nazi occultists do when betrayed, killed, and resurrected as demons, lost and disoriented in ruined hellscape? Their job.

Necrotic Haze$4.99
"Survive and escape an undead nightmare in this cooperative multiplayer adventure. Join forces with others, battle hordes of undead, and find the elusive way out. Teamwork is key in this thrilling fight for survival."

Bodyrain$1.99
Slaughter hordes of zombies and challenging bosses in Bodyrain: a zombie FPS game! Accumulate money to acquire new weapons and gain experience to strengthen your character and clean up Dawn City!

Contagion$9.99
Contagion isn't your average Zombie Shooter but instead takes a more realistic and different approach to the popular genre with unique characters, environments, weapons, items, and a built in system that makes every round completely unpredictable with resources, objectives, and paths ever changing.

Knockback: The Awakening$4.99
Fight against hordes of zombies in this physics-based co-op game loaded with humor, and loads of customizable weapons.

Field of the Dead$8.99
Field of the Dead is a post-apocalyptic sci-fi horror game where you battle undead and mutants with space weapons. Level up, fight bosses, acquire rare gear, and explore infested areas to uncover the apocalypse's secrets. Supports single-player and up to four-player multiplayer.

Dead Streets: Zombie Blitz$4.99
Dive into the adrenaline-pumping action of Dead Streets: Zombie Blitz, where the fate of the city rests in your hands! This action-packed shooter throws you into a city overrun by the undead, transforming every corner into a battle for survival.

Undead Hunter Part I$4.99
Undead Hunter is a realistic first-person shooter with a dark and scary atmosphere, created on the Unreal Engine 5. Take up arms and go destroy the undead. From the dead to werewolves and demons. Go to forests and abandoned cities and clear the places from the undead. Can you defeat them all?

Survive the Nights$19.99
Survive the Nights is a unique FPS survival game focusing on teamwork, fortification, creativity & strategy. Secure a structure or roam free, the choice is yours. Gameplay focuses on realistic survival, post zombie infestation. Prepare during the day for nightfall. How many nights will you survive?

Signal Ops$9.99
Greetings Officer-Cadet o249,Are you ready to be put to the test? If deemed worthy, you will be assigned as an officer in the shadowy halls of Facility 7C. You will remotely lead a squad of operatives on daring espionage missions to plant evidence, steal secrets, assassinate targets, and perform sabotage for the glory of the Dark Father.

REDDOOR$12.99
in REDDOOR the player must survive against endless rounds of the undead, opening and clearing doors and using weapons, perks, utilities, and Power-Ups to their advantage to survive.

Enigma Manor$9.99
Enigma Manor is a 1-4 player co-op survival horror game. Navigate your way through the procedurally generated manor, fend off monsters, solve puzzles and find a way to escape.

Lunch Box$1.99
A peaceful animal kingdom, everyone was attacked by ferocious animals that suddenly appeared while having a good day. Survive the purple animals as if they were infected. Either carry a gun to survive, or they'll be lunch boxes.

Undead Blackout: Reanimated Edition$7.99
If classic top-down shooter Loaded was merged in a lab with Resident Evil you might get something like Undead Blackout: Reanimated Edition. Reimagined and rebuilt from the ground up with the latest version of Unreal Engine 4, this is a frantic, unrelenting and supremely challenging shooter.

Final Days$4.99
Final Days is an arcade-style co-op shooter where you battle endless hordes of mutants. As the hordes grow into the hundreds, work together with your team to survive the onslaught!

F.U.B.A.R$0.99
The World Is Pure F.U.B.A.R. Come together and fight with your friends against never ending waves of the undead.. or go solo and take on the treacherous horde alone.

Handy Harry's Haunted House Services$4.99
Team up with up to 8 friends online to explore the haunted, randomly generated depths of these dusty attics. Find and repair the objectives, flip the master switch and escape before the ghastly ghoul that lurks in the darkness catches up to you. Play through the career mode or explore free play!

Find a way out: Abode of darkness.$5.99
A game in the genre: First Person Shooter, RPG, Puzzle. You'll have to walk around the building to get essential items. Also you have to save battery charge because it runs out very fast. And the worst thing you'll face with is contaminated which is far more dangerous than zombies!

Deadly Rain$5.99
Deadly Rain is a survival horror FPS game that puts you in a terrifying fight for survival against hordes of scary mutants in a rainy, abandoned village. Find and manage resources to stay alive in the worst and most unexpected situations.

Recursive Hate - Spider HellFREE
Try to survive in Spider Hell. Fight with big, realistic and terrifying spiders and versus swarms with literally thousands of spiders.

Dead Matter$19.99
After a rampant viral outbreak causes global society to collapse, you must survive the harsh wilderness of the Canadian Rockies amidst vast hordes of Infected and rival survivors.

ZIC – Zombies in City$4.99
Control a team of 4 characters, switching between them to use their unique abilities. ZIC: Zombies In City is a first person zombie survival shooter.

Audacity$3.99
Grab your friends and escape Auda City, which has come under attack from the living dead. Bullet hell meets zombies, do you have the Audacity to survive?

Screencheat$14.99
Screencheat is a ridiculous competitive split-screen first-person shooter where everyone is invisible, so players are forced to look at each other’s screens to win. Supporting both local and online multiplayer, combat in Screencheat is fast and furious with a wide variety of one-hit kill weapons.

Shotgun n Zombies$1.99
A strange fog rise up. You grabbed your shotgun when you heard a voice outside. Wtf Zombies. Try to stay alive for 5 minutes and kill them all to win and unlock next difficulty level.

Monster HideFREE
Immerse yourself in the frenetic action of this innovative FPS with three unique game modes, a game where each mode offers an intense and thrilling experience for fans of varied challenges.

Gone: Survival$0.99
Gone Survival is a first-person survival game for one player. Where you have many opportunities and a completely open world

POLAR$2.99
Are you a target? or not?The target mode, one of the polar game modes, brings a different perspective to survival.If you are a good player, you can survive in a minute without dying.

Deadly Broadcast$4.99
Deadly Broadcast is a co-op horror and survival game that can be played with 1-4 players. As a Famous Streamer, you have to stay alive, but at the same time you should stream the paranormal events in the cursed places to gather more donations and more viewers. Don’t die! Don’t cut the Broadcast!

Dunk Lords$9.99
Dunk Lords is a two-on-two basketball beat 'em up featuring over-the-top special moves, devastating dunks, and game-changing equipment. Choose from 20 of the baddest ballers around, each with unique special attacks and abilities, and do battle on a variety of hazard-filled courts.

Peak DarknessFREE
Survive and defend your home or don't it really doesn't matter. What matters is sending those things back to where they came from. Use weapon upgrades, friends or whatever to do this just get it done.

Escape Z$4.99
Survive the apocalypse with friends in Escape Z. Fight and plan tactics to face hordes of zombies. Choose your character, map and prepare. Survival is your only option.

Warriors Of Titus$19.99
Warriors of Titus is a first-person MOBA (Mutliplayer Online Battle Arena)for VR. Finally you can be immersed in a MOBA as you battle to reclaim Titus.

Anarchy: Wolf's law$14.99
Anarchy: Wolf's Law — action, fun, and total control! Capture territories, grow your business, and spread chaos. Strengthen regional power, develop production, and destroy rivals. A dynamic shooter with RPG, survival, and management elements.