Top similar games like Alien Madness:

In 'Evotinction', a third-person hacking and stealth game, you are Dr. Liu, the only one who can stop rogue AIs in a futuristic research facility. Use a variety of hacking skills to overcome robotic threats and uncover the secrets that hold the key to humanity's survival or its potential extinction.

An arcade style ship vs ship stealth battle. Find them before they find you. Destroy their ship before they destroy yours. Only skill will determine the victor.

An extremely difficult strategy game focused on stealth mode. Your objective is to lead the cows on their escape through the spaceship. Go from hiding to hiding so as not to be seen by the aliens and be patient with the granny cow. Are you qualified to fulfill this mission?

After the destruction of the EARTH in 2150, the leaders of the Eurasian Dynasty escaped on board an evacuation fleet. Now they are fighting for the survival of the human species. Their base is one large building comprising of smaller variable parts.

The year is 1962 and the Cold War has the nation gripped by fear.  A top-secret government unit called The Bureau begins investigating a series of mysterious attacks by an enemy more powerful than communism.

You think YOU have it bad? Try getting thrown into a quest with nothing to protect yourself, except your wits! In this trial and error adventure game, patience is key. Explore the castle including 6* bosses and 18 levels complete with their own layouts, enemy paths, buttons, doors and coins!

Survive 10 enemy stages! Shoot 'Em Up style, spaceship game, in pixel art and 8-bit retro music! Evolve your shot to the maximum level, use the energy bar for upgrades, and special abilities! Advance each stage by defeating Bosses and enemies to collect new skills, transformations and extra lives!

Shadow Tactics is a hardcore tactical stealth game set in Japan around the Edo period. A new Shogun seizes power over Japan and enforces nationwide peace. In his battle against conspiracy and rebellion, he recruits five specialists with extraordinary skills for assassination, sabotage and espionage.

ExtremeRetroArena is a classic arcade style shoot 'em up where you must fly around and use spells to avoid contact with enemy spacecraft. The game uses a modernized and stylized version of classic arcade graphics and effects.

"Mr. Hoob!" is a colorful remaster of a FICTIONAL 2006 3D-platformer where you play as an energetic and always smiling platform-hopping character who shoots golden rings from his eyes at blue and green aliens! BEWARE; This game gets darker as it progresses...

Faith & Shield: 4044 Tower Defense game, where you protect the human settlement from the incoming invaders, robots and other creatures, never seen before on our planet.

Build towers and learn abilities to defend against swarms of hundreds of on-screen hostile alien creatures. Choose between sets of randomized upgrades that both upgrade you and the alien swarm. From enormous explosions to far-reaching flamethrowers, no two games are the same.

Skin Deep is an immersive first-person shooter. We got sneezing. We got things getting stuck in your feet. Stalk through a vast non-linear starship and sneak, subvert, and sabotage to survive in this stellar sandbox. You're outnumbered, outgunned, and have no shoes. Welcome to Skin Deep!

A sci-fi action RPG. Battle alien hordes with fast-paced combat, evolving weapons, and a combat drone companion. Upgrade your arsenal, defeat challenging bosses, and explore a hostile alien world.

90s inspired 2D platformer with robots that cuss at you if you jump on their face.

Adventures of DaKoo the Dragon has over 150 levels, every run of the game is unique. Animations, enemy spawning, and attacks are all randomized to enhance the immersion. With multiple ways to attack you will take on 5 Bosses among multiple obstacles.

Take direct control of your hero on a hostile planet. Build your base, gather resources, expand your territory your way, and survive against the planet’s deadly wildlife.

You were chosen for the Planet Keeper Program. Defend the planet in this retro-inspired incremental game. Upgrade our defenses, destroy our enemies, ensure our future.

Desperados III is a story-driven, hardcore tactical stealth game, set in a ruthless Wild West scenario. Play smart if you want to succeed. A good plan can make the difference between survival and finding yourself at the business end of a pistol.

Real-time strategy battles in amazing sci-fi worlds! Command brave soldiers, mighty mechas and powerful aliens to face the greatest challenges in hostile alien worlds. The galaxy needs you!

Heart of Smoke is a platformer game with 90's feel. Players must clear the levels using two characters: the smoke wizard Eneen can fly by creating a bird and attack with bats. The ninja girl Rae is faster and can attack with her katana.

Kells is a retro puzzle game inspired by games of the 90s such as the original Lemmings, but with a gravity-defying mechanic at its core that provides a unique twist on the genre.

Save Our Solar System brings a fresh look on the tower defense genre. Shape the world around you with a lovable playable character. Harvest metal to upgrade towers. Collect rocket parts to advance to further planets. Fend off endless waves of asteroids.

Shadow Rasa is a 3rd person, sci-fi, stealth action, rogue-lite. You’ll infiltrate this virtual world by sneaking and climbing past traps and cameras, killing guards with weapons you find and unlock. Hacking terminals to reveal maps, open doors, steal data, and gain intel to complete your mission.

An SNES-Inspired, platforming, sci-fi adventure. It's like playing a Saturday Morning Cartoon!

A real-time strategy combat game based on the world of the Line Of Defense. Command a team of four Galactic Command marines in highly classified missions in space and on planets.

Pilot a lunar lander through 100 unique, alien-infested caves! Rescue astronauts, gather crates, and collect gems to unlock powerful upgrades. Navigate treacherous terrain, face hostile creatures, and deliver your precious cargo to the surface in this thrilling 2D adventure.

Total City Defense is a zombie themed survival game where you must complete each level to progress. Using the mouse and keyboard you control various units, including Troops, Turrets and Drones to make your way through each level rescuing civilians, VIPS and destroying enemy strong holds.

Roguelike tactical deckbuilding space combat. Make your way home through hostile alien space. Find new technologies, build your deck, survive, and make it home in one piece.

For the first time in over 20 years, we are heralding the return of a much loved piece of gaming history with the classic RPG, Wasteland! Mutants. Again. Even more than there were last time: they seem to materialize out of the very grains of the radioactive desert sand. Venomous yellow eyes.

Explore the remains of a dead god as an AI trying to find your way back to your crew. Scavenge equipment, recruit allies and face powerful foes in this sci-fi rougelike adventure.

(Single player RPG) Rising from the much enjoyed Ashes of the Night, Wormskull unveils itself with Duncan and Maduin finding themselves constantly running. They dodge at every turn, ever evading the grotesque hand of doom that reaches for them and the rest of the world.

The ultimate space capital ship combat compendium is the evolution of hard core space combat sims. The only game of its kind currently in existence.