Top similar games like Area 51 Defense:

Survive on a hostile moon full of nightmares! Face hordes of monsters, explore mysterious locations, and uncover secrets that may save your life. Will you find a way to escape, or will you be consumed by the darkness of Tarvos?

Isometric action shooter with light RPG elements. Brutally kill tons of alien monsters, find over a dozen powerful weapons, skill up your hero & stop the blood thirsty invaders in a classic handcrafted campaign. Never ending waves await you in horde-mode!

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.

Crimson Frontier – a fast‑paced top‑down shooter in the world of cyberpunk with the vibe of 90s action movies in single player mode, like super‑macho who crushes every enemy standing in his way.

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!

Shred zombies and bandits, collect and upgrade weapons, and explore the beauty hidden within industrial decay in a new story-driven, top-down horror shooter. Survive one more day in the post-apocalypse.

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!

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

Isometric insurgent simulator. Fight on foot and in vehicles, build and steal a private arsenal and bring the war home to the businessmen who started it all in this continuation of the Brigador saga.

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...

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

Project Zarya is an open-world adventure set in post-apocalyptic Russia, where every day is a fight for survival. Explore, gather resources, build shelters, craft equipment, and battle the infected alone or with friends.

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...

You are Subject 3. Blind, trapped in a facility crawling with mutants. You have a weapon — but it runs on the same power you need to escape. Navigate like the blind: listen, feel, memorize — and make it out without wasting your last percent of energy.

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.

Survival horror where you explore collapsed facilities, face biotechnological horrors, and survive with limited resources.

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.

Co-op horror where the Station watches you. Complete missions, scavenge loot, and upgrade your gear across deadly runs. The Station Director learns your squad's habits, your fears, your greed, your routines, and adapts every run to break them

Dark history about OSIRIS corporation, which performs experiments in the field of teleportation of human souls to the Heaven on the artificial planet G6. Inspired by Deep Dark Dubstep music.

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!

A frantic, 3D top-down shooter where the gameplay loop constantly evolves as you rip cybernetic implants from your defeated bosses.

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.

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.

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.

Wake up in a zombie-infested laboratory, uncover the truth behind the disaster, and fight to survive in an intense experience of horror, action, and mystery.

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.