Top similar games like Room Invaderz:

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.

"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.

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.

Collect a swarm of rats to help you survive against a sadistic cult.

It’s 2091 and megacorp Horzine has produced the ultimate army: an obedient horde of bioengineered monsters called zeds. Now, join the rebel group Nightfall in this co-op action/horror FPS that puts you and your teammates in a battle for the future of humanity.

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?

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.

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.

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

Barricade is a wave based zombie fps with a classic 90's feel. Build and defend a barricade from endless waves of zombies. Will you juggle building, shooting, and repairing, or be overrun?

Favela Zombie Shooter is a wave-based action shooter, where you have to defeat different types of zombies in a Brazilian Favela. Survive zombie waves, earn money and get better weapons to survive longer!

Pizza Bandit is a mission-based 1-4 player co-op shooter. As a time-traveling bounty hunter, venture across various eras and realms on missions fraught with dangers. It has Gears-like combat minus the cover with snappy controls and dodge-rolling with close to mid-range combat.

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.

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.

Team up with 64 players to fight off the horde of zombies in this post-apocalyptic FPS. Getting yourself killed is not the end, but a new beginning as a zombie! Turn on your teammates and tear them apart. Level up and unlock new weapons, perks, clothing options and more!

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.

Hunt down waves of vampiric freaks with friends or on your own in this brutal but fair horde roguelike fps. Explore, upgrade and find secrets to overcome the intensifying challenges thrown at you by a future that never was. Shoot, die, repeat.

City Massacre is a free-to-play zombie-survival FPS. Take part in survival competition in the locked city. Play solo or as a team, earn money and popularity. To win in the “City Massacre” means to get right for worthy and carefree life.

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.

Containment Initiative is a local co-op VR shooter which can be played by two people on the same PC. Kill zombies alone in VR or have a friend cover you by using the mouse and keyboard. Features include realistic weapon reloading as well as a variety of unlockable guns, upgrades, and loot to find.

First person wave based shooter where you must survive, alone or with a friend. Kill and earn gold to buy weapons and experience to level up as the waves becomes harder.

In this game you have to fight your way through hordes of zombies in search of a safe place.

The apocalypse was years ago. Those still living are termed the 'Extant'. The dead can smell the living from a mile away. Because of this, Extant SOG groups of four operators have been tasked with infiltrating areas with supplies alone to retrieve for the Extant civilians. You are one of them.

Deborg Desolation is a first-person indie game intended for the survival of mankind. Train to be a soldier capable of containing any injurious entity to achieve the survival of your own race, seek to plan strategies that allow your advancement without stopping.

Reverb is a multiplayer PVPVE extraction stealth shooter with a first-person perspective, set in a fictional Biopunk universe where there is a constant struggle for evolution.

Frigore takes place in 1995.An indie survival RPG horror game. Simple gameplay, beautiful graphics , dark and chilling atmosphere.

Broken War is an intense first-person shooter that combines different multiplayer modes.

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.

Infees is a singleplayer voxel game. At the moment it has only one playable mode where you have to kill zombies and survive as long as possible, there are many weapons, and upgrades at your disposal to make this task easier!

Counter-Strike Nexon: Studio is a Free to Play MMOFPS offering competitive PvP and PvE action including content from the original Counter-Strike and all new game modes, map creation function, weapons, and hordes of Zombies!