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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SolitariusFREE
Solitarius is a 2D top-down wave shooter set in a sci-fi space environment. It is a free minigame that contains six different levels, eight different enemies and nine different weapons. Instead of surviving as long as possible you have to make it through each level.
Survive the Rift$14.99
Survive the Rift is a rogue-lite shoot 'em up with procedurally generated levels, unlockable ships, and plenty of items to make each run unique. Inspired by classic 16-bit era scrolling shooters with modern rogue-lite game mechanics.
Jack Big Chin: Alien Invasion$2.99
Save humanity! Help Jack Big Chin defeat the alien invaders, in a hard action-adventure game with 3D platform elements, where you must improve your weapons and activate cannons to complete your missions.
Nightork Adventures 2 - Legacy of ChaosFREE
Nightork Adventures - Legacy of Chaos 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 5 boss monsters. It also comes with a level editor, so you can create your own levels.
Battle Star Asteroids$0.99
You have a very important mission. Be a hero who saved humanity from extinction. Fight intense battles, use all your skills and destroy all the threats that are coming to our planet. Remember, we don't know exactly what we are dealing with, be careful. You are our hope.
Mech vs. BugsFREE
In Mech vs Bugs, you'll pilot a mech to fend off alien insects on remote planets. Combining intense top-down combat with strategic looting and crafting, your goal is to liberate the galaxy, one insect-infested planet at a time. Ready for your thrilling, third-person adventure?
The Battle of Aurinoxia$2.99
A retro space shoot 'em up with pixel art graphics, unique enemies, tough angry bosses, and a killer soundtrack. You are among the first pilots to arrive in the system to mount the counteroffensive against the aggressors. Get out there and show these aliens the price for messing with The Alliance!
The Future Project$9.99
Take control of an AI soldier, explore planets, and partake in fast paced combat in The Future Project, a first person metroidvania. Explore distinct worlds, obtain new weapons and abilities, and defeat powerful enemies in humanity's quest to journey the stars.
Perilous Warp$14.99
Perilous Warp is a fast-paced indie retro-shooter inspired by the classic 3D-actions. Communication with a distant space colony has been lost, and you bravely step into the teleporter with the desire for glorious adventures. But do not expect to win in a heartbeat!
Gravity in Space$13.99
Gravity in Space is an acurate-physics-based spacecraft flight and combat simulation. Learn how to use gravitational forces to navigate through surreal worlds, while you outplay your enemies and shoot them.
Red Galaxy$0.99
This is a retro space shooting game, where you only fight against the strongest enemy. There are 15 unique bosses in the game, and players need to use different weapons and strategies to defeat them. Dedicated to you who are both challengers and retro game lovers.
Anceder$12.99
Dive in the VR arcade shoot-them-up (shmup, shoot'em up, bullet hell). A lot of action is awaiting you. "Insert coin" and jump in the shmup !
Critical Damage$5.99
Fascinating and entertaining space action game.
Absolute BlueFREE
Sidescrolling Shoot’em’up that will transport you back into the 90s (and space).
Super Arcade Boy in Defender of Planet Earth$1.99
A Retro Style Classic Side-Scrolling Shoot 'Em Up with Super Arcade Boy's Debut! Fly him through 8 levels while defeating waves of enemies and bosses with amusing dialogue, power-ups, HD graphics and full controller support. Super Arcade Boy's up to the challenge. ARE YOU?
Star Mine$5.58
Star Mine is a 3D first person perspective space shoot 'em up. Awesome old school action! The old federation is dying, poor and desperate. Deep outside the boundaries of known space, alien mines are protected. But not from you. Take cargo, blast star jewel's from asteroids, steal energy and flight.
Super Trunko Go$8.99
Super Trunko Go is a challenging top down shooter that takes place in a thrilling space world. Navigate our hero Super Trunko, and help him restore peace back to the planet!
Colony - Arena Online$1.99
Fight against rebel robots together with your friends and save planets from invasion....
REVO$14.99
Dodge and shoot your way through waves of enemies. REVO is a high speed, neon drenched space shoot ‘em up inspired by arcade classics of the 1980’s. Collect pickups, unlock powerful, ammo hungry weapons, and defeat giant bosses.
INSPACE 2980$2.99
INSPACE 2980 is a stylish and dynamic SHMUP from the 16-bit era of games consoles and arcade machines. Take part in an exciting adventure and save the galaxy! Once again!
B.L.A.C.K. - 1$4.99
Fight for survival in B.L.A.C.K - 1, a 3D FPS roguelike set in a dystopian future. Battle through procedurally generated spaceships using all your skills and resources, in Zero-G environments. Can you survive long enough to finally escape from enemy territory?
Exovoid Carnage$19.99
This HEART-POUNDING WAVE-BASED ARENA SHOOTER catapults you into an alien-infested space station. SHOOT, SHRED, and SURVIVE as you crush enemy hordes, dodge chaos, and challenge yourself to set a new record. The battle escalates with every second—GET IN THERE and FIGHT!
One Way Road: FirehuntFREE
Firehunt is a prologue for the main story One Way Road. Take part in space battles as you travel across the galaxy and fight to save humanity. This cinematic narrative driven action-focused space shooter, will take you on a journey into the near future, and put the destiny of mankind in your hands.
Invaders 360$9.99
A modern tribute to arcade legends! This shoot'em up arcade game revives the classics after 45 years with fresh graphics and innovative gameplay. Become a part of Space Ranges Inc. Join now! Get the high score!
Starlight: Eye of the Storm$7.99
SHOOT 'EM UP!Starlight: Eye of The Storm is a 2D Vertical SHMUP set in a 3D background. Unleash your special powers, upgrade your weapons! Take on 10 Arcade stages or 15 Campaign missions! Drift (auto-pivot mode) behind your enemies and take them on with style!
Starship Wars$0.99
Destroy enemies, bosses and everything you see ahead!! Get crystals to buy better starships and get stronger. Have fun in three different game modes.
Super Arcade Boy in Goodbye Greenies$1.99
A Retro Style Classic Shoot'em Up! In this second installment of the series, fly Super Arcade Boy through 8 levels while defeating waves of aliens and big bosses. Have funny conversations with the alien leader you are destined to defeat, then save the planet from this massive alien invasion!
Dwarf Star$4.99
Dwarf Star: 16 bit inspired game where mercenary go shoot shoot on evil alien guys who were accidentally fabricated by the government. Top down space shooter with a mission based structure. However, you can do these missions in plenty of different orders with different amounts of upgrades.
Gunlocked$4.99
A twin stick shooter without the twin stick, Gunlocked is a sci-fi action roguelike about careful positioning and upgrade selection. Manage unique targeting systems across multiple weapons and upgrades, as you battle legions of alien ships, and then do it all over again!
The RushFREE
The Rush is a horizontally scrolling shoot 'em up with graphics inspired by classic space shooters of the MSX. Buckle up and see if you have what it takes to master the highly adaptive Chameleon Quartz space fighter and single-handedly obliterate the alien invaders!
Galandrix$0.99
Galandrix is a rogue like arcade game played from a top-down view and features both fast-paced action and real time strategic choices. Select your ship and blast off into the unknown against countless hordes of enemies.
Starfighter Neon$0.99
You've been dropped into enemy space. Weave your Starfighter between alien spaceships, lasers, asteroids and bombs destroying as many as you can and collecting valuable coins and powerups as you go.
Starwulf$2.99
Dive into Starwulf's unique blend of brick puzzles and space shooter action. Explore diverse planets and star systems, unlock special missions, and upgrade your ship. Can you save your home planet? Casual subgames, included to the demo version, offer endless fun.
Angry Universe VR$14.99
Welcome to a VR game where you rule the universe! Break stuff, enjoy gravity physics, and survive natural disasters. And the best part? Fight off aliens using several guns or even asteroids. Try everything you can to keep your home solar system safe from the dangers out there!
Speglar$3.99
Frantic 4-player laser ricocheting top-down shooter. Keep it casual and enjoy the chaos, or master the surprisingly deep mechanics to obliterate your enemies. Duke it out locally in free-for-all or 2v2.
Starway: BaRaider$5.99
This is a sci-fi VR action shooting game. Mechanical frenzy is coming! Players have to teleport to survive from thousands of bullets.
Hotloop$2.99
Use the force of gravity in this fast-paced space shooter with realistic physics and orbital mechanics.
Thrust & Shoot : Flight School$9.99
Master a new way to fly and fight. Control every movement and engine burn. Simple controls, realistic flight: a game for space fans by a space fan.
IDF-ASD$4.99
Intense one or two player bullet hell a call back to the arcade shooters of the past.Not an easy bullet hell, but once you beat a mission the next mission stays unlocked and you can replay missions already beat to get points and parts for upgrades.
Planetary Defense: An Orbital Turret Defense System$1.99
2D space shooter and turret defense come together to create the Planetary Defense System this world needs! Shoot down asteroids and aliens and survive the bosses in this arcade like game featuring customizable satellites, projectiles, and upgradable Cannon and Planet Shield systems.
Into The Void$0.99
A wormhole has opened up letting aliens terrorize your city. Pilot your spacecraft and destroy the aliens using flamethrowers, missiles, gatling guns, shockwaves, and more!
Supplice$14.99
Supplice is a stylish throwback shooter inspired by the mid-90s FPS glory days and the legendary Doom modding community. Mixing the retro stylings of 90s era shooters with colorful graphics and frantic gameplay, it creates an experience that's ever so familiar but also exciting and fresh.
Overdriven Evolution$14.99
Destroy Huge Bosses, dodge thousand of bullets and resolve quick puzzles with your powerfull space ship ! New and remade stages with improved graphics and 3D environments. More enemies and more bullets !
Magnificent-1$2.99
Get into the cockpit of an ace pilot fighting in the galactic war in this sci-fi arcade top-down shooter. Participate in numerous campaign missions to explore the story of Magnificent-1 and enjoy the arcade mode to strive for the highest score.
BossConstructor$14.99
Scavenge modules, combine them in the deadliest and most efficient ways imaginable, and fly your very own spaceship through alien space with BossConstructor. Thousands of procedurally generated galaxies await you and your space-faring collection of assembled modules to explore them.
Gratuitous Space Shooty Game$3.99
Gratuitous Shooty Game is a hobby space shooter made by the developer of Gratuitous Space Battles, reusing the art from that game :D.
Project Rocket : Invasion Resurgence$1.99
Project Rocket is a Hack & Slash game set in a futuristic universe. Play as a member of an elite unit of space soldiers, equipped with the latest human technology, and take on the hordes of aliens invading the colonies.
Captain CollisionFREE
A top-down action game like no other. Use asteroids to block enemy bullets and smash enemy ships in this physics-based test of skill. Conquer 25 levels, vanquish 5 bosses, and maneuver through 5 tricky bonus waves.
Breach the Abyss$4.99
A sci-fi wave-based shooter with roguelite elements. Collect powerful upgrades and unique combinations to wipe out hordes of bloodthirsty creatures and make your way into the Abyss.
Rifle Dodger$6.99
A VR Arcade Shooter
Mido and Di$0.99
Mido is an alien kid having nightmares about zombie aliens. One night he draws a creature, Di, and it comes alive to teach Mido how to fight zombies.