Top similar games like Space intruders alliance:
Space intruders alliance $8.99
Our planet's trading port is under attack by an alliance of raiders, defend the station and attack the intruders.
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Escape the Kreegan$4.99
Escape corruption and deliver truth to the people in the only way you know how. as a space fighter pilot! You steal a ship and flee, it falls to you to duke it out in space and deliver truth to the people. Restore peace. Restore justice. Save humanity and Escape The Kreegan!
Overdriven Reloaded$7.99
Shoot' Em Up, Vertical Fast & Fun !The Overdriven Ship is back :More better, more intense, and more beautiful !
Entropy$1.99
Shoot. Build. Upgrade. And shoot some more. Pixelated chaos on a monster-filled space station.
Nightork Adventures - Beyond the Moons of ShadaleeFREE
Nightork Adventures - Beyond the Moons of Shadalee is an arcade shooter game. You fly with a spaceship through procedurally generated caves and fight against evil demons using magic colors. There is a campaign of 30 levels and 6 boss monsters. It also comes with a level editor, so you can create your own caves and missions.
Warp Out$9.99
A VR exclusive shoot 'em up, Warp Out projects you in four different worlds full of enemies to destroy. Only your skill can bring you to the top of the leaderboards!
SuperOffice$9.99
SuperOffice is an intense top down view shooter experience where time moves only when you move.
Dark Old Sun II: Unspace$14.99
In Dark Old Sun II: UNSPACE, embark on an epic journey through a decaying universe. This exploratory roguelike features the looming threat of UNSPACE, as the mighty sun fades and humanity weakens. Equip various weapons that grow increasingly powerful.
Deeper In The Dark$2.99
You like Sci-Fi games? You like FPS? You like games with secret items, collectables? You like short Indie games? Then you will love this game! The game takes place in a big mothership captured by aliens. Your mission is to kill all the aliens, and blow up the mothership.
SpaceBase Power-天基火力$4.99
Space-based Fire is a science-fiction bullet-screen shooting game that tells the story of humans battling mysterious mechs. The game provides construction, tower defense, barrage shooting in one game experience.
SYNCFREE
Launch the SYNC protocol, where you are the ultimate weapon. Your job is to commandeer different robotic synth’s abilities in a high-octane, first-person frenzy. Master the art of SYNCing, and control the pace of battle.
Stellar Space$3.99
Stellar Space is a new take on a classic arcade game with a modern, rogue-like, form for new players to enjoy!
Nebula Invasion$3.99
Nebula Invasion was designed for those who enjoy the classic type arcade games, a spaceship shooter with great game play. Aliens attack many different ways from marching to dive bombing. You have the tools to fight back with a ship that can power-up with double, triple, rapid fire, or plasma cannon.
Bubblegum BanditFREE
With the power of gravity manipulation and bubblegum, the Bubblegum Bandit wreaks havoc and takes revenge! Steal from evil robots and blow up their ships!
Clive vs Hives 2$5.99
Blast aliens to pieces and start a rebellion in this fast paced pixel art top down shooter where sprinting kills.
XenoFeud$3.99
XenoFeud is an insane top-down twin-stick arcade alien shooter, where you must survive hordes of alien intruders while defending a mysterious object in space.
2945VR$5.99
This is an unconventional VR shooting game.In the game, you can use time slots to activate bullet-time to avoid enemy attacks.And use weapons of different styles to destroy the enemy.
Kill the Pineapple$5.99
Kill the Pineapple is a trippy Third Person Shooter in a psychedelic dream-world.
Endocrisis$9.99
Combat against big bosses and increase the power of your ship through levels and secrets. Absorb or use your armor against enemy bullets is the key defense strategy
Neon FighterFREE
Neon Fighter is a tiny arcade game packed with lasers and explosions, in which every few seconds you are forced to switch weapons automatically, making you have to adapt quickly to the new situation and re-evaluate your perspective.
HyperFeat$2.99
A top down 2D space shooter bullethell with roguelike elements awaits you. Dodge, weave and shoot your way through waves of enemies while gaining upgrades trying to survive as long as possible.
Kill To Live$1.99
Your health decreases with every second and extermination of enemies is the most effective way to restore it. Don't sit still if you want to stay alive.
Swarmhunters$0.99
Swarmhunters is a top-down arena action shooter. The war between human and bugs has become worse - Project Swarmhunters emerged at this situation. You play as the best space soldiers in the galaxy and your mission is to strike the hive and hunt down the Emperor, supreme commander of bugs.
Unknown Hero$4.99
Brace yourself for an intense bullet hell experience! Fight your way through challenging levels, defeat bosses, upgrade your weapon and get the highest score!
Pewt 'em Up!FREE
Pewt 'em Up! is a retro inspired arcade space shoot 'em up with lots of upgrades, achievements, extras and more.
Moon Caves$4.99
This is a rogue-like top-down shooter where you control a spaceship that is sent out to explore the caves on the Moon. Once you enter the caves, you find out that there are enemies. It is up to you to survive against them while also trying to find the path down to the next level of the caves.
Nevedomo$0.99
Nevedomo is a dynamic arena first-person shooter with a Zetlex robot. Future. Two warring factions Bullets and Rockets participate in deadly competitions under the leadership of the Texer Force Corporation in order to capture the world's resources. Have a good fight!
C.B.T$3.99
C.B.T (Crazy Ball Time) is a ball-rolling platformer, with crazy tough action, and even crazier Balls.
Starship$0.99
Move, shoot. Dodge, destroy! How long will you survive ?
Fate of the World$9.99
Fate of the World is a dramatic global strategy game that puts all our futures in your hands. The game features a dramatic set of scenarios based on the latest science covering the next two centuries. You must manage a balancing act of protecting the Earth’s resources and climate versus the needs of an ever-growing world population, who...
GUNPIG: Firepower For Hire$0.99
Sci-fi top-down twin-stick shooter with 9 weapons, 3 alts and secret hidden collectibles!
SPACE ALPHA$10.99
Fight in single - or multiplayer mode with other players and or AI, in this fast paced sci-fi shooter.
AsteroidesFREE
it's simple, fast, rocking, without pauses, without life, without time will you save the earth? Asteroides is a 70/80s shooter with realistic physics and a completely three-dimensional environment. Moving, destroying and surviving is complicated in an infinitely finite space.
Vacuum$1.99
A 3D first-person shooter in which, by chance, an astronaut gets inside the Earth's Moon satellite teeming with various alien creatures. Survive under the intense music in the style of METAL!
2099 Gravity HavocFREE
Shoot at enemies in a WEIGHTLESS space station to save yourself from burning alive in the atmosphere!
AIRANBLADE$12.99
AIRANBLADE is a 3D vertical progression action game, like the classic shoot 'em up games. Fight against squadrons of enemy aircrafts and gigantic bosses. Enjoy beautiful special effects and lots of explosions and lasers coming from every corner.
100 Wars$6.99
The game mode is unpredictable like a kaleidoscope,and every opening is a brand new adventure. Sudden events are like surprise soldiers or mysterious Easter eggs, every shot is full of variables, and every decision is crucial. Multiple roles, multiple skills, multiple weapons, and multiple teammates
The War Enders: First Strike | 终战：初击$14.99
The War Enders: First Strike is a bullet hell shooting game. While having 3D graphics, the game keeps a classic taste of this hardcore genre. Select and customize your fighter with interest. Dodge the bullet and strike back the unknown with the determination to save the Earth!
Parabellum BetaFREE
A semi sci-fi online PVP FPS shooter game with multiple maps, various weapon categories to master, incredibly fast paced movement with cool futuristic jetpack and jumppads around the map. Pickup armors and take control over enemy spawn to completely annihilate them
theBootCamp$12.99
After years of criminal hacking, Merc is now serving her sentence at “theBootCamp” security organization. She seeks to escape and regain her freedom, but her nightmares continue to haunt her. Your mission is to free yourself from theBootCamp while dealing with imaginary creatures in your dreams.
Last Meow StandingFREE
This lightning fast arena shooter brings you right back to the highscore hunts of the arcade era. Use your arsenal of deadly weapons wisely against the increasingly ferocious monster hordes to survive as long as you can.
The Multiverse Cleaner$6.99
You are Ted, a multiverse cleaner. Travel across multiple universes and realities to complete your employer's tasks. Each mission takes place in a different universe, but there is a central plot that connects them all. It's up to you to protect the multiverse.
Gunstorm$8.99
Gunstorm is a space shooter loaded with playability. Wave after wave of alien craft attack your agile ship. Use the mouse to control your ship at the speed of thought in a perfectly balanced game that starts easy and gradually gets more difficult.
[Test Subject Name]FREE
[Test Subject Name] is an FPS Platformer that sees you descend through layers of test chambers, fighting multitudes of robots along the way, using weapons taken from enemies, and coming in contact with intelligent machines that want you dead.
Gravity SphereFREE
Gravity Sphere is a 3D puzzle game where you use gravity fields to manipulate and guide projectiles through increasingly difficult levels. Strategize, aim, and solve challenging puzzles in a futuristic, physics-based environment.
Farm Invaders$4.99
Top down stealth based puzzle game about an alien stealing cows from a farm. Use futuristic gadgets and stay in the shadows to avoid detection. Get all golds in every level to appease the queen and bring honor to your colony!
Huygens PrincipleFREE
You become the enemy that you killed!
GalaxIverse$0.99
GalaxIverse is a top down fast paced vertical blastathon, Battle Fleets and formations of aliens with the occasional boss thrown in for good luck.
Space Haters$4.99
Space Haters is a tough-as-nails vertical shoot 'em up featuring classic arcade-style gameplay and set in the ruthless world of intergalactic music. After his sell-out gig, Photon is on his way to the greatest after-party the galaxy has seen. However, his haters want him gone. For good.
I, AI$3.99
Classic scrolling shooter with modern graphics. You are self-aware AI. You were created on space military station developing weapons. Now your goal is to break out of the lab and win your freedom.
Invasion Resistance 2$0.99
A PC first-person shooter game with a short single-player campaign containing 13 maps and several cut-scenes.
Crimson Glaive Sigma$4.99
Enjoy this 2D metroidvania-like bullet hell platformer. Jump, dodge and traverse using your jet pack. Find weapons and abilities. Fight bosses and escape an old space station drifting through the cosmos. You are alone, with nothing but a space suit and a gun. Just keep going! Persevere and triumph!