Top similar games like Room Invaderz:

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 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!

F.E.A.R. 3 delivers all the hallmarks that define the F.E.A.R. brand: terrifying paranormal experience, frenetic combat and a dramatic storyline.

Evil has returned! Demonic powers are manifesting themselves as a myriad of dark creatures, fighting over the fates of imprisoned souls caught in Purgatory.

An arcade round-based zombie survival FPS experience playable by yourself or with up to 3 of your friends online! Dive your way through thousands of dead bodies as you kill them to collect money to upgrade yourself and discover the hidden secrets of BRAINDEAD.

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.

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.

PARANOIA PLACE is a 2 player online co-op survival horror game. Together or alone, you will need to solve puzzles, find items and run from the bloodthirsty demonic killer.

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.

"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.

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.

A Single and cooperative game for 4 players, you are a fighter of a special purpose unit, your task is to destroy waves of zombies by taking convenient positions and using tactic

Winner of 2010′s Make Something Unreal contest, The Haunted: Hells Reach is a fast-paced horror game where your goal is to liberate cursed places and survive the assault of Hell.

Pizza Bandit is a unique blend of Overcooked and Gears that offers a twist to the genre with its love for cooking. In this mission-based 4-player co-op third-person shooter, you embody a pizza restaurateur who returns to his old bounty-hunting gigs, determined to sustain his failing pizza shop.

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?

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 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.

A medieval fantasy, round-based horde mode FPS. Become a Paladin solo or with up to 3 friends, wield swords and spells to purge an endless onslaught of reanimated horrors. Perform rituals, unlock spells and melee weapons, and uncover the truth behind the enchanted fortress you are sworn to protect.

An intense round-based zombie survival FPS, play solo or co-op. Shoot your way through relentless waves of vicious horrors with high-octane objectives, upgrading steampunk weapons, collecting Celtic God powers, and surviving the onslaught of the Quiet Ones.

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.

Set in the zombie apocalypse, Left 4 Dead 2 (L4D2) is the highly anticipated sequel to the award-winning Left 4 Dead, the #1 co-op game of 2008. This 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.

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.

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

Voidseekers is a 1-4 player co-op horror FPS. Shoot, salvage, and survive as you explore corrupted ships in deep space. Get in, take what you can, and destroy the ship to contain the breach, but beware the horrors that seek in the void.

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

Zombiemachia offers a mature and intense experience for fans of carnage. Face endless waves of zombies with weapons, traps, and dismemberment, all in a realistic environment.

O.A.S.I.S is a simple wave-based zombie survival shooter that combines the best elements of classic arcade-style shooters with the atmosphere of an alternate 80's dystopian world. Just relax and have some fun -- either solo or with up to 3 friends.

P.E.P Is an online game set in a zombie filled coastal United States City with Single Player, Co-Op, and up to 8 Player PvEvP, featuring classic and unique game modes filled with zombie, creature, and human mayhem.

Ready for the next generation of 3rd person shooters? Hazard Ops has zombies, monsters, robots, dinosaurs, mechs - pretty much anything you can point a gun at. Sink your teeth into this action-packed online shooter!

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!

Survive the chaos of SCP Foundation! Step into a thrilling SCP horror experience with story-driven co-op, intense PvP Breach mode, and randomized maps. Play as Class-D, scientist, SCPs, and more, each role bringing unique challenges in an unpredictable, immersive facility.

WASTED Bloodline is a first-person shooter with stunning graphics, singleplayer botmatch mode, online multiplayer, and cooperative play, featuring long-term support.

Exanimate is a 1-4 player co-op survival game where you face off against never-ending legions of Zeds and their innumerable variations in a valiant attempt to escape with your lives, your riches and your highest possible scores! How long can you hold out against the Exanimate?