Top similar games like Orbital Invaders:

Halo: Spartan Assault brings the excitement of Halo combat to Steam for the very first time. Battle your way through 30 action-packed missions against the Covenant as you explore the origin of the Spartan Ops program featured in Halo 4. *DirectX feature level 10 required. *

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.

Use the force of gravity in this fast-paced space shooter with realistic physics and orbital mechanics.

A retro space shooter with a twist - now you can rotate your ship and aim diagonally at enemies, adding a whole new dimension to the shoot 'em up genre.

Defend Terra against the onslaught of hostile invaders in this 2D top-down space shooter. Upgrade and empower your ship's different systems to stand a chance against the growing threat. If you fall, Terra falls, and the rest of the galaxy will soon follow.

Embark on an epic 3D space shooter adventure featuring dynamic space combat and thrilling planetary exploration. Battle in single or multiplayer modes from 1v1 to 5v5, strategizing to achieve victory through base destruction, resource collection, or base capture. Dominate with our ranking system!

"Raiden" unites! Get ready to blast into a thrilling new dimension like never before!

A space action, looting and ship progression game first made over 25 years ago while I was studying programming, now remade: explore systems, fight, collect loot and upgrade your ship module by module.

VRAstroSmash is a seated, casual scifi arcade style shooting VR only game. Destroy asteroids, space junk, and UFO'S. Up to 4k textures and 150000 polys. Ship auto upgrades through the game progression, such as auto fire, ship repair, increased weapon cooling, and flight controls.

A game about exploring space in search of hospitable planets for colonization. Casual gameplay and short rounds make it a great option for killing a few minutes.

A hyperdrive malfunction sends Keith T. Maxwell tumbling through space and time to fight for his life against a mysterious alien armada that is wreaking havoc.

Planetary Defense - defend the Earth from attack!

Void Prison is a fast paced, endless arcade twin stick shooter that puts you inside of an ever shrinking ring. Survive by fighting emerging enemies around you and don't get consumed by the void. Complete achievements to unlock new skins and powerups and get on top of the leaderboards!

vertical scrolling shoot 'em up arcade game

Experience the explosive science fiction arcade-shooter that resurrects a much revered franchise in an epic single player and co-op multiplayer campaign.

UNSTABLE is a 3D action runner with spaceship flight simulation. Handle unique keyboard controls to avoid asteroids! Disintegrate obstacles with a plasma laser weapon! Beat Leaderboard! And get to the mysterious unknown! Will you master the chaos of an unstable spaceship?

Fight the mother of all space battles in an epic space combat shooter to end all space combat shooters! Jet Scalawag faces down the evil alien armada through time and space on worlds and expanses never before seen!

Space Ace is a 2D top-down shooter that focuses on upgrading your ship to fight through levels of Bosses and smaller enemies. Play with keyboard + mouse or Xbox controller.

Gratuitous Shooty Game is a hobby space shooter made by the developer of Gratuitous Space Battles, reusing the art from that game :D.

In the distant future, the X universe faces a period of profound and irrevocable change. While the universe stumbles towards an uncertain future, countless adventures await as new enemies rise in search of power.

Star Spectre is a single player space combat game with tons of exploration and numerous RPG elements. You will be free to explore and trade, as well as fight in a vast galaxy.

Curved Space is an intense arcade-style twin-stick shooter that takes the classic formula and plunges it into the weirdest reaches of space. Battle cosmic space-invading spiders across curved landscapes where bullets hug the terrain while the horizon drops sharply out of sight.

Tank Warz! is an arcade shooter that will keep you entertained with fast paced tank destruction, power-ups, traps, secrets, and an energetic rock soundtrack. You'll enjoy hours of arcade fun!

The game is filled to the brim with the atmosphere of cold space and zero gravity, features unusual game mechanics with a lot of puzzles, exploration, stealth, resource extraction, crafting, fights with alien forces and seizing space stations!

A fast‑paced symphony of destruction where you are always outnumbered. Survival demands constant motion, sharp evasion, and smart arsenal management.

Blast into the chaos of Space Rocks in Space, the ultimate 3D space flight adventure. Pilot customizable ships, explore stunning worlds, and battle through asteroid storms, UFO attacks and endless missiles barrages in this retro arcade odyssey.

Blow up bots beyond the stars. AI Driven 2D Spaceship Warfare

Earth Space Defenders is a starship twin-stick real-time shooter action game. Experience story of menacing green smoke that plagues whole universe. Supports steam multiplayer and party play with multiple controllers.

A fun little space shooter inspired by the 1979 classic Asteroids.

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.

No nonsense, action packed, 2.5D, Asteroids inspired shooter. Scream around speeding rocks narrowly avoiding an untimely death as you obliterate rocks whilst harvesting their valuable resources. See how far you and your friends can get. Best played with mates but also pretty fun on your own.

Lead a powerful space battleship and bring victory to humanity in the midst of an endless war.

Discover a beautiful and brutal universe through three immersive stories. Champion blazing fast dog-fights, Out wit aggressive defense systems and overcome constant overwhelming odds. This is your goal, this is your duty, this is your way of life...

Kill all enemies, Upgrade, Repeat! Defeat thousands of enemies in this incremental roguelite and become unstoppable as you progress through the game.

A 2D, top-down shoot'em up with simulation elements, deeply reminiscent of those vector games from the 80s. Blast your way trough space, enemies and mystery. Upgrade your drones. Endure your mothership's AI cynical attitude and survive the most realistic shoot'em up ever!