Games like Alien Syndrome

73%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:optimization, grinding

72% User Score Based on 913 reviews

Critic Score 60%Based on 6 reviews

Ripout is an online Co-Op horror FPS that will have players fight their way through procedurally generated derelict ships filled with mutants capable of reconfiguring their alien bodies. Survive with your trusty Pet Gun companion, collect loot, and customize your character to fit your playstyle. If you enjoyed this game, see our list of games similar to RIPOUT.

Metacell: Genesis ARCADE is an arcade game inspired by old-school arcade games, with the match 3 mechanic. The basic gist of Arcade mode is a score attack mechanic where you want to survive to level 100 with the highest score. Fight back a never ending spawn of game pieces by making matches of 3 or more before the board fills up, or even worse, you are killed by one of the traps that could spawn a… If you enjoyed this game, see our list of games similar to Metacell: Genesis ARCADE.

96%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, optimization

96% User Score Based on 32,714 reviews

Survive To See Your Next Day Off If you enjoyed this game, see our list of games similar to Abiotic Factor.

86%Game Brain Score

Most mentioned positive aspects:music, gameplay

Most mentioned negative aspects:story, grinding

87% User Score Based on 335 reviews

Critic Score 81%Based on 2 reviews

Due to a sudden shortage of milk, cats around the world are forced to seek out new sources to get their fix. You and your team of milk mining kittens have overcome a fear of water to drill down under the ocean seabed and begin extracting vast reserves of what seems to be naturally forming full-fat milk. Get ready for fast paced submarine action, defending the kittens from disruptive mechanical sea… If you enjoyed this game, see our list of games similar to Aqua Kitty: Milk Mine Defender.

86%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, grinding

86% User Score Based on 142 reviews

"Taking up arms solo or with a friend, you must dance with death in a brutal and addictive arcade platformer shooter inspired by Super Crate Box and stuffed to the brim with unlockables. Fight through rapid fire single screen levels each with a random combination of platform layout, objective, vending machines and enemies. Dodge and weave amongst the aliens to stay alive but don’t leave them stan… If you enjoyed this game, see our list of games similar to Super Mutant Alien Assault.

61%Game Brain Score

Most mentioned positive aspects:music, graphics

Most mentioned negative aspects:gameplay, story

94% User Score Based on 16 reviews

Lil Tanks is an action-packed, side-scrolling shooter that puts you in control of a prototype tank -- defending humanity from the alien scourge known as The Cuur. As Earth's last hope, you must upgrade your tank with unique power-ups and blast the aliens back to where they came from! Level up by destroying The Cuur and earn powerful permanent upgrades. Unlock multiple tanks by completing objective… If you enjoyed this game, see our list of games similar to Lil Tanks.

92%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, optimization

92% User Score Based on 123 reviews

Juanito Arcade Mayhem revives all the retro classics using the mechanics made popular by Super Pang. Don your finest pyjamas and help Juanito defend our favorite games from the alien Clonocell invasion! If you enjoyed this game, see our list of games similar to Arcade Mayhem Juanito.

70%Game Brain Score

Most mentioned positive aspects:music, gameplay

Most mentioned negative aspects:story

87% User Score Based on 30 reviews

Critic Score 75%Based on 4 reviews

The definitive 'Turbo Edition' of the easy to play hard to master space blaster. Bringing more game modes, ships, challenges, upgradable power-ups and frantic retro space blasting fun than ever before. Alone or in co-op you’ll keep coming back to unlock ships, upgrade weapons and beat your high-score. If you enjoyed this game, see our list of games similar to Super Mega Space Blaster Special Turbo.

82%Game Brain Score

Most mentioned positive aspects:graphics, music

Most mentioned negative aspects:story

82% User Score Based on 60 reviews

Somewhere in the future a hostile alien race conquers most of the galaxy. Scientists developed the “Millennium Soldier” project by cloning two super-soldiers. Armed with blasters they will battle scores of monsters, robots and boss aliens to save us and get a well-earned reward. If you enjoyed this game, see our list of games similar to Expendable.

82%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, grinding

88% User Score Based on 1,244 reviews

Critic Score 73%Based on 6 reviews

Thousands of giant insects and aliens once again ravage the earth, and only the Earth Defense Force can stop them. Defend the city of New Detroit against an infestation bigger and meaner than ever before. Destroy these monsters at all costs, even if it means turning entire city blocks into rubble! Enjoy raw arcade shooter satisfaction on a gigantic modern scale. Collect over 300 weapons: assault … If you enjoyed this game, see our list of games similar to Earth Defense Force: Insect Armageddon.

70%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, grinding

66% User Score Based on 2,416 reviews

Critic Score 77%Based on 5 reviews

The Games on Demand version supports English, French, Italian, German, Spanish, Japanese.Mankind finds itself poised on the brink of extinction deep underground.  Darius Mason is humanity’s last hope for survival If you enjoyed this game, see our list of games similar to Red Faction: Armageddon.

Face the end in a high-intensity cinematic sci-fi shooter. Engage a colossal threat, rescue civilians, and survive relentless enemy waves in a city collapsing under the weight of the unknown. Your squad is the last line between humanity and total annihilation. If you enjoyed this game, see our list of games similar to Incident X.

89%Game Brain Score

Most mentioned positive aspects:humor, story

Most mentioned negative aspects:monetization, stability

89% User Score Based on 1,606 reviews

Revenge of the Savage Planet is an upbeat, satirical action adventure Sci-Fi. Jump, shoot and collect your way across vibrant alien worlds, uncovering new gear and upgrades, while discovering various hidden secrets. If you enjoyed this game, see our list of games similar to Revenge of the Savage Planet.

81%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, optimization

80% User Score Based on 1,036,310 reviews

Critic Score 82%Based on 48 reviews

Join the fight for freedom and democracy by enlisting with the Helldivers to protect Super Earth and its inhabitants. If you enjoyed this game, see our list of games similar to HELLDIVERS 2.

85%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, optimization

85% User Score Based on 800 reviews

Sentry is an action-defense first person shooter where you defend your spaceship against a relentless alien threat. Use traps, turrets and environmental destruction to repel invading hordes and engage the enemy in fast-paced FPS action across a dynamic singleplayer or co-op campaign. If you enjoyed this game, see our list of games similar to SENTRY.

81%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:optimization, stability

81% User Score Based on 22,604 reviews

Starship Troopers: Extermination is a pulse-pounding co-op first-person shooter. Join the Deep Space Vanguard, an elite Special Forces branch of the Mobile Infantry, in the fight against the Bug menace and claim victory for humanity! Your trusty Morita Assault Rifle, support tools, and fellow Vanguard Troopers are all that will keep you alive while exploring the hostile surface of these ugly plan… If you enjoyed this game, see our list of games similar to Starship Troopers: Extermination.

74%Game Brain Score

Most mentioned positive aspects:gameplay, replayability

Most mentioned negative aspects:story, graphics

74% User Score Based on 639 reviews

Critic Score 73%Based on 2 reviews

Traverse the universe and fight strategic, real-time battles alongside your friends in This Means Warp - an intense cooperative roguelike game. Upgrade your ship, take down individual enemy subsystems, and adapt your strategies in a constantly changing fight for survival. If you enjoyed this game, see our list of games similar to This Means Warp.

84%Game Brain Score

Most mentioned positive aspects:graphics, story

Most mentioned negative aspects:monetization, grinding

84% User Score Based on 945 reviews

Epic side-scrolling shooter. Blast aliens to smithereens! If you enjoyed this game, see our list of games similar to Flying Tank.

87%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:stability, grinding

87% User Score Based on 5,232 reviews

We Need to Go Deeper is a 2-4-player cooperative submarine rogue-like set in a Jules Verne-inspired undersea universe. In the game, you and your crew must embark on many voyages into a mysterious undersea trench known as The Living Infinite. If you enjoyed this game, see our list of games similar to We Need To Go Deeper.

88%Game Brain Score

Most mentioned positive aspects:story, music

Most mentioned negative aspects:stability, grinding

95% User Score Based on 115,377 reviews

Critic Score 90%Based on 40 reviews

The fast-paced FPS that changed gaming forever. If you enjoyed this game, see our list of games similar to DOOM.

84%Game Brain Score

Most mentioned positive aspects:music, gameplay

Most mentioned negative aspects:grinding

93% User Score Based on 72 reviews

Critic Score 60%Based on 3 reviews

Project Starship X is a procedural shooter where you Crash-Kill cosmical abominations with your spaceship while playing as Swagthulhu! Whaaat?!??! If you enjoyed this game, see our list of games similar to Project Starship X.

39%Game Brain Score

Most mentioned positive aspects:music, replayability

Most mentioned negative aspects:gameplay, graphics

59% User Score Based on 17 reviews

War has started! Rangok Skies is a vertically scrolling arcade shooter inspired by the genre classics. Highly replayable with 4 different characters, each with their own unique ship, weapons, and bombs. Includes 2-player local co-op. If you enjoyed this game, see our list of games similar to Rangok Skies.

85%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, stability

91% User Score Based on 12,918 reviews

Critic Score 75%Based on 6 reviews

Helldivers is a topdown shooter set in a satirical dystopian future where mankind is ruled by a managed democracy. You are part of the Helldivers – the spearhead of humanity’s defense against the perpetual alien threat on Super Earth. With up to four player co-op missions, working together as a team is vital, whether calling in strikes or placing weapons, each action must be totally synchronized … If you enjoyed this game, see our list of games similar to Helldivers.

74%Game Brain Score

Most mentioned positive aspects:music, graphics

Most mentioned negative aspects:optimization, story

74% User Score Based on 977 reviews

Way over in the big void of space live some aliens. They coveted your planet and would do anything to live there. So what's your planet to do? Yeah, blast through them all! Face off against waves of enemies, bosses, giant laser planets, blackholes, wormholes, massive lasers, planets and asteroids across 12 game modes! If you enjoyed this game, see our list of games similar to Really Big Sky.

64%Game Brain Score

Most mentioned positive aspects:music, replayability

Most mentioned negative aspects:gameplay, graphics

74% User Score Based on 38 reviews

A game made by fans, for fans, Hangeki seeks to infuse a classic genre with new ideas. Utilize multiple spectacular weapons to decimate the enemy, and formulate new strategies as you take on the alien invasion in this reimagining of the classic shoot em up. If you enjoyed this game, see our list of games similar to Hangeki.

84%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, grinding

89% User Score Based on 5,959 reviews

Critic Score 71%Based on 4 reviews

Bringing the legendary war between two of science-fiction's most popular characters to FPS fans, AvP delivers three outstanding single player campaigns and provides untold hours of unique 3-way multiplayer gaming. Experience distinctly new and thrilling first person gameplay as you survive, hunt and prey in the deadly jungles and swamps surrounding the damned colony of Freya's Prospect. As the Ma… If you enjoyed this game, see our list of games similar to Aliens vs. Predator.

79%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, grinding

79% User Score Based on 2,926 reviews

Hidden Deep is 2D action & exploration sci-fi thriller game (for PC) where you command group of explorers deep under the ocean floor to find out what happened to previous expedition to which contact has been lost. As they go deeper and deeper, they discover strange structures and deadly unknown organisms. If you enjoyed this game, see our list of games similar to Hidden Deep.

80%Game Brain Score

Most mentioned positive aspects:graphics, music

Most mentioned negative aspects:gameplay, replayability

90% User Score Based on 40 reviews

The Final Space universe has expanded to VR! Join Gary, Avocato, Nightfall, and Tribore as they embark on a brand new journey to rescue their dear friend from the clutches of a new, but familiar, threat. Take on this shooter adventure solo or online with up to 3 friends! Use your arsenal of weapons to reign supreme and show the galaxy who's boss. If you enjoyed this game, see our list of games similar to Final Space: The Rescue.

66%Game Brain Score

Most mentioned positive aspects:graphics

Most mentioned negative aspects:music

81% User Score Based on 32 reviews

JOIN THE DISCORD About the GameIncursion is an indie FPS that aims for a unique wave survival experience with class-based combat for both co-op and singleplayer. Fight alongside strangers or friends and take advantage of unique weapon combinations, perks, and classes to win in this solo-developed indie title.AboutIncursion brings a new twist on wave survival, heavily inspired by Team Fortress 2 … If you enjoyed this game, see our list of games similar to Incursion: Reforged.

85%Game Brain Score

Most mentioned positive aspects:humor, gameplay

Most mentioned negative aspects:stability, grinding

87% User Score Based on 3,843 reviews

Critic Score 78%Based on 3 reviews

The iconic Serious Sam brings his trademark relentless intensity to this bigger, bolder, more colorful sequel to the classic Serious Sam: First and Second Encounters! Tasked with rescuing the universe one bullet at a time against overwhelming hordes of time traveling enemies, Serious Sam must battle through thick jungles, murky swamps, frozen tundra, and futuristic cities to bring down Mental and … If you enjoyed this game, see our list of games similar to Serious Sam 2.

84%Game Brain Score

Most mentioned positive aspects:humor, gameplay

Most mentioned negative aspects:replayability, grinding

91% User Score Based on 1,160 reviews

Critic Score 75%Based on 7 reviews

Marooned on the desolate planet Gravoria, the trio of adventurers finds the only method of escape awaits at the top of a tower - a tower renowned for its deadliness and its propensity to be filled with monsters! Lizard-men! UFOs! Nuclear ants! Dinosaurs! Robot Apes! If you enjoyed this game, see our list of games similar to The Deadly Tower of Monsters.

99%Game Brain Score

Most mentioned positive aspects:gameplay, atmosphere

Most mentioned negative aspects:graphics, stability

99% User Score Based on 101 reviews

A monkey-themed VR vs PC local asymmetric horror game If you enjoyed this game, see our list of games similar to Escape from Mandrillia.

81%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:gameplay, replayability

89% User Score Based on 100 reviews

Critic Score 71%Based on 8 reviews

Earth Defense Force 2025 is the long awaited follow-up in the Earth Defense Force (EDF) series from Japanese developer Sandlot. The insects return from dormancy to end humanity with over-the-top action and massive city-leveling explosions that will entrench the EDF and the citizens of Earth into a state of emergency. If you enjoyed this game, see our list of games similar to Earth Defense Force 2025.

83%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:stability, grinding

93% User Score Based on 1,918 reviews

Critic Score 73%Based on 9 reviews

X-Morph: Defense Complete Edition includes: X-Morph: Defense core game, European Assault DLC, Survival Of The Fittest DLC, Last Bastion DLC If you enjoyed this game, see our list of games similar to X-Morph: Defense.

80%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, stability

81% User Score Based on 17,006 reviews

Critic Score 70%Based on 1 reviews

Endure a dangerous universe and fight for survival together If you enjoyed this game, see our list of games similar to Aliens: Fireteam.

62%Game Brain Score

Most mentioned positive aspects:graphics, music

Most mentioned negative aspects:gameplay, grinding

81% User Score Based on 26 reviews

Critic Score 68%Based on 1 reviews

Binarystar Infinity is a 1-Bit Shoot ‘Em Up with a challenging experience reminding of the traditional Arcade Shmup classics, that can be experienced alone or with a friend, and with the particularity of being playable in vertical or horizontal scrolling mode. Offering handcrafted levels and bosses with modern fast action gameplay and smooth feedback controls, packaged in a stylized nostalgic 1-Bi… If you enjoyed this game, see our list of games similar to Binarystar Infinity.

79%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, grinding

80% User Score Based on 538 reviews

Critic Score 75%Based on 2 reviews

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 play. If you enjoyed this game, see our list of games similar to Shadowgrounds.

84%Game Brain Score

Most mentioned positive aspects:music, gameplay

Most mentioned negative aspects:stability, grinding

93% User Score Based on 21,246 reviews

Critic Score 83%Based on 8 reviews

Risk of Rain is an action platformer with roguelike elements. With permanent death as a primary feature, players will have to play their best to get as far as possible. Fight on a mysterious planet with randomly spawning enemies and bosses, either alone or with 3 friends in online co-op. If you enjoyed this game, see our list of games similar to Risk of Rain.

85%Game Brain Score

Most mentioned positive aspects:gameplay, music

Most mentioned negative aspects:graphics, stability

85% User Score Based on 2,187 reviews

Executive Assault is an indie real-time strategy/first-person shooter computer game where you can not only build your base and create armies, but also take control of your units and fight as one of them. If you enjoyed this game, see our list of games similar to Executive Assault.

49%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:optimization, stability

49% User Score Based on 1,277 reviews

The Anacrusis is a four-player, cooperative first-person shooter set aboard a massive starship stranded at the edge of explored space. Team up with your friends in an infinitely-replayable fight against alien hordes to unlock perks, weapons, and new ways to play that you can share with your team! If you enjoyed this game, see our list of games similar to The Anacrusis.

57%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, stability

57% User Score Based on 307 reviews

Gish isn't your average hero. In fact, he's not your average anything...you see, Gish is a ball of tar. A Sunday stroll with his lady friend, Brea, goes awry when a shadowy figure emerges from an open manhole and pulls Brea below ground. Following Brea's calls for help, Gish suddenly finds himself in the subterranean sewers of Dross, a long forgotten city filled with twisting corridors, evil traps… If you enjoyed this game, see our list of games similar to Gish.

93%Game Brain Score

Most mentioned positive aspects:graphics, gameplay

Most mentioned negative aspects:grinding, stability

95% User Score Based on 2,054 reviews

Critic Score 83%Based on 2 reviews

A first person shooter extravaganza where you take the role of Serious Sam, a badass killer whose goal is to defeat monsters commanded by Mental, an extraterrestrial entity that wants to destroy humanity. Serious Sam is a high-adrenaline arcade-action shooter heavily focused on frantic arcade-style single player action. In a world where cyberpunk meets fantasy-fiction and advanced technology is m… If you enjoyed this game, see our list of games similar to Serious Sam: The First Encounter.

95%Game Brain Score

Most mentioned positive aspects:gameplay, music

Most mentioned negative aspects:graphics, story

95% User Score Based on 93 reviews

Bullet Hell Insanity + Tower Defense Strategy. Rogue Star Rescue is a quirky new type of rogue-like shooter. Blast your way through diverse planets while rescuing your teammates and gathering traps for your defense strategy. If you enjoyed this game, see our list of games similar to Rogue Star Rescue.

71%Game Brain Score

Most mentioned positive aspects:graphics, music

Most mentioned negative aspects:story, grinding

86% User Score Based on 630 reviews

Critic Score 71%Based on 8 reviews

Enter the world of Ultratron and experience the addictive gameplay of old-school arcade favourites such as Robotron: 2084, updated and improved for the 21st century! Unique retro-futuristic sound and graphics, player responsive difficulty, and a subtle system of tactics combined with classic gameplay make Ultratron a fun and hypnotic arcade blast. The last human has been slain by evil killer rob… If you enjoyed this game, see our list of games similar to Ultratron.

84%Game Brain Score

Most mentioned positive aspects:graphics, gameplay

Most mentioned negative aspects:story, monetization

85% User Score Based on 453 reviews

Critic Score 80%Based on 2 reviews

"Long ago a computer scientist called Dr Sepulveda created a beautiful digital world existing entirely within a computer network of his own invention. This world was called Darwinia and it was inhabited by a peaceful, law-abiding digital life-form called the Darwinians. If you enjoyed this game, see our list of games similar to Multiwinia.

84%Game Brain Score

Most mentioned positive aspects:music, gameplay

Most mentioned negative aspects:stability

90% User Score Based on 852 reviews

Critic Score 82%Based on 3 reviews

Blazing Chrome is a classic co-op run 'n gun with an original arcade feel. Players can choose between Mavra, the badass human resistance, soldier or Doyle, the groovy rebel robot, to kick some metal ass. If you enjoyed this game, see our list of games similar to Blazing Chrome.

80%Game Brain Score

Most mentioned positive aspects:music, story

Most mentioned negative aspects:character development, grinding

80% User Score Based on 1,245 reviews

Saviors brings the best bullet hell experience you can find on Steam. Play through 18 challenging stages in this ultimate test of tactics and reflexes. If you enjoyed this game, see our list of games similar to Saviors.

84%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, stability

96% User Score Based on 7,113 reviews

Critic Score 72%Based on 33 reviews

Stand and fight for humanity. This arcade shooter takes place in the year 2022, as the Earth Defense Force fends off an all-out attack by unknown life forms. Become an EDF soldier, battle against endless hordes of immense enemies, and restore peace to the earth. If you enjoyed this game, see our list of games similar to EARTH DEFENSE FORCE 5.

64%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, replayability

64% User Score Based on 573 reviews

Can you survive the alien onslaught? Alien Breed 2: Assault is the second chapter in the Alien Breed series, and is an explosive science fiction arcade-shooter with an epic story, swarms of highly intelligent alien enemies, high-impact weaponry, highly detailed and rich environments, developed using Epic Games' Unreal Engine 3. Take control of the hero, Conrad, the ship’s Chief Engineer, and conti… If you enjoyed this game, see our list of games similar to Alien Breed 2 Assault.

88%Game Brain Score

Most mentioned positive aspects:gameplay, music

Most mentioned negative aspects:story, grinding

88% User Score Based on 172 reviews

Zedfest is the goriest game show ever created! A hardcore 4 player co-op third-person shooter with the goal to complete objectives while neutralizing Zeds with lots and lots of visceral gore. If you enjoyed this game, see our list of games similar to Zedfest.