Top similar games like Area 51 Defense:

In RED NIGHT, you play as Tess and face a demonic artificial intelligence in a horror anthology game. Each level explores a universal fear through unique and chilling worlds.

Defend your fortified barricade by night, collect weapons and conduct repairs by day. Survive long enough to make your way through America and towards rescue.

In the laboratory where experiments were conducted on humans, a disaster occurred. Find a way out as soon as possible, bypassing hordes of zombies and military cordons.

Innovative Tower Defense inspired by legendary Alien Shooter series! The game was created in keeping with the best traditions of Sigma`s games, no concessions of any kind - everything is just like in real life!

A thrilling, first-person, action-survival game set in the modern post-apocalypse. As mankind’s last hope, you’ll traverse the hospital ravaged by a lethal plague. the fight for survival gets progressively more difficult as the story unfolds. Be ready for violence

Guardians of Orion is a Sci-Fi Action RPG Looter Shooter with Dinosaurs and Robots. Complete Mission Objectives all over the Galaxy with your friends to earn new Gear & Rewards!

Brutal fast-paced isometric Co-op Loot Shooter in Cyberpunk world. Equipment-based combos. Exotic Weapons and Armor. Easy to start, hard to master. Play solo or with friends.

Hatred is a violent twin-stick shooter, in which you take the role of The Antagonist fighting against all of humanity.

An isometric brutal horde shooter with light RPG elements. Kill tons of aliens, find over a dozen weapons, skill up your character & unveil the secrets of an abandoned research lab!

Annihilate countless hordes of enemies while unraveling the mysteries of the demonic invasion in this COD Zombies inspired bullet Hell. Kill, upgrade, explore, die, repeat.

You are following the story of security guard working at power plant which uses experimental technology, designed to draw electricity from atmosphere. One day you start hearing strange stories about anomaly sightings, soon you witness something terrifying...

Shadowgrounds breathes fresh air into the action genre with explosive combat sequences, an innovative weapon upgrade system, and an intriguing storyline. The adrenaline-pumping, top-down gameplay and audiovisual fireworks set the scene for this new action experience which also includes single computer (split keyboard or joystick) co-op...

Fast Paced, Violent Top-Down Shooter. Magic Abilities. Difficult Levels. Twitchy Enemies. Level Editor.

Survive or die ! Experience survival horror full of puzzles while escaping between the streets of Algeria after zombies invasion . Suffer to protect your life in situations never attempt them before with first person perspective and powerful actions that make it more realistic then ever

ZOMBIES!!! Overloaded waves of undead chaos! Armed with crazy weapons and power-ups, you’ll fight, dodge, and nuke your way through endless hordes. Face intense bosses, survive outrageous room filling hordes, and climb the leaderboards! It’s fast, it’s gory, it’s OVERLOADED!!

Colony Assault is an action game in which you play as a marine commander sent to evacuate scientists from a research colony on planet LN-421, after recieving their distress signal.

The Rapture Has Happened. You didn't make the cut. Rapture Rejects is a top down isometric last man standing game set in the apocalyptic Cyanide & Happiness universe.

A mix of tower defense with classic shooter. Gather resources, place traps, build towers, and buy weapons to exterminate waves of United Forces of Heaven, Hell, Purgatory, Cthulhu, Carnivores and Aliens.

Memory Lost is a story-driven fast-paced cyberpunk shooter where you are not just fighting enemies — you become them. Possess enemies, adapt their weapons and skills, and fight ruthless corporations. Uncover secrets, upgrade abilities, and shape your own fate in this world.

Top down, action packed, multiplayer, zombie shooter. Build your base with friends and see how long you can survive the endless horde of zombies. Level up with friends, or alone, how you die is up to you.

Are you tired of the same boring old vacations? Then boy have we got the tonic for you! Slaycation Paradise offers the ultimate in multi-dimensional apocalyptic tours. Slay away your worries with Twin-Stick action mixed with Tower Defence as you visit the end-of-world scenarios of your dreams!

He had one rule: No killing women or children. When a hitman is double-crossed by his employer, he brings forth a night of carnage and bloodshed.

Ailment is a pixel-art action game which takes place on a spaceship in a far far galaxy. The main character wakes up in a spaceship after being unconscious for three days and all of his crew became enemies. He has to remember what happened and find out the truth.

A scifi third person survival horror. Stranded in the farthest reaches of space, Dr. Belica Gale boards the Opaldune seeking help. But in the bowels of the ship, monsters are prowling. Slip through dark hallways to scavenge for supplies, solve puzzles, and evade enemies long enough to get back out.

Take on the role of the captain of a troubled jumbo jet carrying infected passengers intent on bringing the plane out of the sky, or pit yourself against hundreds of zombies in the interior of a jumbo jet or even walk along the outside as you fight to regain control as one of the passengers.

Space Amazons! Cosmic Horror! Action!

Dead Earth is an open world survival game, choose what you want to do in this world, build a small base, hunt for food, survive and explore the open world, play the game your way, ohh... and try to stay off the menu.

Red Alliance is an atmospheric, dark action thriller single player game with elements of horror. The game takes place in Eastern Europe where the society is under oppressive regime enforced by a mysterious scientist whom the player must stop to restore justice.

Our planet was sucked into the Blackhole 300 years ago and miraculously came out the other side. It appears to be the same Earth we loved and thrived on... or is it? In this survival game you will go through the ranks starting at Monsterlehrling up to being a Monstermörder.

SILENT DOOM is an atmospheric first-person survival horror adventure set in a nightmarish universe. Gameplay consists of combat, exploration, and puzzle-solving. It is designed around the idea of "being thrown into the world". Isolated and lost inside this nightmare world.

RUINER is a brutal action shooter set in the year 2091 in the cyber metropolis Rengkok. A wired psychopath lashes out against a corrupt system to uncover the truth and retrieve his kidnapped brother under the guidance of a secretive hacker friend.

Experience the Half-Life™ expansion packs like never before. Operation: Black Mesa features reimaginings of both Half-Life™ Opposing Force and Half-Life™ Blue Shift through two unique campaigns. How will you survive the Black Mesa Incident? It's time to choose.