Top similar games like Hazard Protocol:

A dark co-op top-down shooter in a post-soviet zombie apocalypse setting. You appear at a random location in the city. The goal is to get to the transport, and you will make the path yourself. In the day - look for resources and build fortifications. At night - destroy the dead and their bosses!

In KILLING FLOOR 2, players descend into continental Europe after it has been overrun by horrific, murderous clones called Zeds that were created by rogue elements of the Horzine Corporation. 6-player Co-Op & 12-player VS Zed-slaughtering mayhem.

Lead a deniable squad through Project Requiem: a necro-tech conspiracy where the dead are piloted by a networked AI, the Choir. A top-down tactical shooter, story campaign solo with bot allies or co-op (Steam & LAN), plus PvP and PvE modes.

GTFO is a hardcore cooperative horror shooter that throws you from gripping suspense to explosive action in a heartbeat. Stealth, strategy, and teamwork are necessary to survive in your deadly, underground prison. Work together or die together.

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.

Top-down co-op survival shooter for 1-4 players. Battle zombie hordes, complete dangerous missions, and scavenge gear in infected zones. Upgrade your survivor and fight to live.

Survive overwhelming hordes of zombie-like mutants in this chaotic co-op twin-stick shooter. Play solo or team up with up to 16 players as hundreds of enemies flood the screen in a relentless fight to hold the line.

A tactical 3D top-down zombie shooter with an innovative Field-of-View system. Tasked by researchers, you must uncover the cause of the zombie outbreak while managing scarce ammo, using tactics, melee, and grenades to survive endless waves.

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.

DarkSwarm is a top-down tactical co-op shooter for 1-4 players. Deploy to lost colonies, face thousands of enemies, and extract valuable resources through procedurally generated levels. Combine four distinct classes and watch your fire!

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.

You and your friends can be part of the Z-Company. Defend Targets against huge hordes of zombies with all kinds of weapons and buildings in this Tower-Defense/Shooter hybrid.

Purge the undead! Intense action-shooter with deep rpg elements, including upgradeable guns and armor, unique class skills, and class special abilities. Entire game can be played single player or as a 4-player online co-op game, including PvP events like Last Man Standing.

Team up with up to 8 players and take on endless waves of Nasty Zombies in a high-intensity, movement-focused boomer shooter. Use agility and smart positioning to survive semi-procedural maps and unlock permanent upgrades like Blessings, Miracles, Invocations, and cosmetics.

Make It Count is a 1-3 players Co-op, post-apocalyptic, top-down shooter with roguelite elements. Venture into your mission with randomized routes, find trinkets and bring carnage to the filth that is infesting this world!

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!

A co-op horror FPS about daring heists in a city full of zombies. Because, you know, they don't need money anymore, but you do! Multiple ways to approach each heist and randomly generated elements await you. Gather your team and get ready to rob the dead!

This game is a port of the Games for Windows - Live version that was released in 2009. If you buy the Untold Stories Bundle here on Steam, it will be the same as upgrading to Resident Evil 5 Gold Edition.

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...

Blending action and survival horror, Resident Evil 6 promises to be the dramatic horror experience of 2013.

Join the corps! Umbrella Corps brings a competitive experience featuring new types of strategy and technique blended with elements from the world of Resident Evil, to create a unique kind of shooter!

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.

The world has fallen by zombies. As a part of the association, you are dispatched to the places where zombies are concentrated and stabilize these areas. Fill your backpack with the full of items, and eliminate zombies with the bullet hell.

Join the fight for survival in a top-down shooter with realistic-looking combat. Raid the infected city and fight for survival in team battles.

Hunt: Showdown 1896 is the brutally rewarding extraction shooter. Track twisted monsters and overcome ruthless PvP. Take bounties in corrupted backwaters lost to history. With a team, you might survive. Die with nothing or get out with everything.

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.

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

Versus Squad is a fast action twin-stick shooter from the creator of Nation Red. Build your own sandbox defense and battle thousands of zombie mutants in top down combat! Face up to a dozen bosses. Simultaneously. Collect loot, build and repair. Play single player, on-line or local coop!

First-person survival game set in the early stages of an apocalypse. Explore urban areas filled with brainless demons. Find what you really want or become one of THEM.

Team up with 64 players to fight off the horde of zombies in this post-apocalyptic FPS or join the horde against the living! Turn on your teammates and tear them apart. Level up and unlock new weapons, perks, clothing options and more! Equip your favourite loadout and join the fight!

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.

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.

Team up or face it alone in this top down zombie slaying defense adventure! Featuring up to 4 player online co-op, cleanse the infected wave by wave and upgrade your base with traps & defenses to build the Ultimate Zombie Defense. Can YOU stop them?

Exterminate zombies in style with up to 4 players in this action packed co-op top-down shooter.

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.