Top similar games like Hazard Ops:

Codename CURE is a first person, co-operative zombie game with support for up to five players, providing dynamic, fast-paced zombie fragging with both objective, and survival-based missions.

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!

The New Z is a FREE TO PLAY multi-game mode experience. SURVIVE with friends and gather loot, stash and trade. Go into wars against other groups in a massive OPEN WORLD or face them 5 v 5 in COMPETITIVE.

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.

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.

Play with your friends in a Zombie Infested World as you face the remnants of zombie hordes & rebuild society in a truly massive sandbox world. Choose how you want to play with hundreds of items, skins, weapons, character customizations, base building, crafting, zombies & more!

** Please note: a remastered and improved edition of this game is now available in Zombie Army Trilogy.**Featuring a co-op campaign for 1 to 4 players, Nazi Zombie Army is a horrifying new stand-alone expansion of the award-winning Sniper Elite series.

S.K.I.L.L. - Special Force 2 is a fast-paced, action-packed FPS shooter based on the Unreal Engine 3. The game features a wide range of game modes, tons of maps and a huge selection of weapons.

Free to play shooter about the confrontation of two irreconcilable sides, represented by the government military housings and the armed hirelings. Try your hand at virtual battles with off-scale dynamics and hurricane gameplay in the spirit of the classical shooters.

Embark on an exotic journey into danger in this rip-roaring 1930s third person adventure for 1-4 players! Encounter pulse-pounding action, treacherous traps and tales of derring-do!

Brick-Force is a sandbox shooter that lets you BUILD your own battlefields, SHARE them with other players, and PLAY many challenging game modes in fast-paced PvP matches!

The Skies is a unique combination of post-apocalyptic MMORPG and FPS with a non-linear storyline, in which you follow your own path or join other players to conquer the wasteland.

The Ultimate BATTLE ROYALE! Sharpen your skills and kill everyone in your way as you hunt for guns, gear and glory in a massive battlefield where only ONE can be crowned the LAST MAN STANDING. Earn cash prizes in a monthly competitions,

Stay Out - is a MMORPG with shooter elements, based on spirit of “stalking” - an urban exploration, searching and exploring mysterious, abandoned and forgotten by humanity pieces of our planet.

Z1 Battle Royale is a Free to Play, fast-paced, action arcade, competitive Battle Royale. Staying true to its "King of the Kill" roots, the game has been revamped and restored to the classic feel, look, and gameplay everyone fell in love with. Play solo, duos, or fives and be the last ones standing.

** Please note: a remastered and improved edition of this game is now available in Zombie Army Trilogy.**Experience a terrifyingly intense co-op campaign for up to four players in this gut-wrenching sequel to Steam best-seller, Sniper Elite: Nazi Zombie Army.

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

Loot. Kill. Survive. Can you escape ? (probably not) Zumbi Blocks 2 is the official sequel to the 2013 free browser zombie game. Stuck on an island, cut off from the rest of humanity, you wake up. The secret to breaking free from this place lies asleep, underground. From the soil, zumbies emerge.

Welcome to Call of Duty®: Warzone™, the massive free-to-play combat arena which now features Urzikstan, Rebirth Island and Fortune’s Keep.

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.

Lost Squad — fan-made Source Engine based game in Half-Life® 2 universe about what happened to Barney Calhoun after Half-Life® 2: Episode One events and why he was not in Half-Life® 2: Episode Two

BlackShot is a free-to-play, first-person shooter set in a post-apocalyptic world.Join other mercenaries in brutal team combat, multiple game modes, and experience in-depth customization to create your perfect warrior!

Escape an astonishing disaster in Ring of Elysium, a battle royale shooter developed by Aurora Studio.

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.

In a free, add-on mod for Killing Floor, created by David Hensley (with help from Killing Floor originator, Alex Quick), you can fight off the bizarre and warped toys of someone's nightmare, that are hell-bent on finishing you off. All the standard Zeds are replaced with evil toys, set in the Devil's Dollhouse map.

The cult horror shooter series comes to an apocalyptic conclusion with an epic new third chapter, a heart-pumping new horde mode, and remastered editions of the best-selling Nazi Zombie Army 1 & 2.