Top similar games like Xalos Conquest:

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!

One Way Road is a story-driven action game combining elements of Scroll Shooter, Top Down Shooter, and Tube Shooter. Take the helm of a space cruiser, explore the galaxy, and fight in stellar battles to save humanity.

Brain Centipede is an action/puzzle game where the player is thrust into an alien world consumed by the consequences of science. You are equipped with a toolbox of items to throw, replenished with the miracles of OmniSolution, to fight against zombies, toilet spiders, drones, gods, and [REDACTED].

Join Captain Rijk as he attempts to escape from the clutches of one of the most villainous species in the galaxy. Help to uncover the horrors that are being carried out on the fringes of the civilised galaxy and become the divine being prophesised to inspire an uprising and destroy The Domain.

Sci-fi RTS and Top-Down

After the Earth exploded, the fate of the Earth is in your hands. By creatively building your own spaceship, you'll fight your way through space against pirates. On your journey you will meet many different life forms, some with good, others with bad intentions.

Enter the chaotic world of Exo Helljumper: Descent X, filled with mutated foes and lurking dangers. Combine items and strategy to conquer relentless levels. Face unique foes and formidable bosses, test your cunning and skills, and feel the thrill of battle as you push beyond your limits!

Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.

Sci-fi 2D shooter platformer combining the control of a human character and an armored vehicle on the surface of a planet filled with robots and immortal local inhabitants

Start a venture into the cyborg world with your trusted companion. Push into virus-controlled territory as you dismantle their traps and eliminate their congregations. Fight alongside your companion to defeat gigantic viruses that cannot be faced alone.

This is a stand-alone game. Players can freely explore different areas of the ship, collect different items, fight with alien monsters, rescue aliens, and ultimately kill all alien monsters on the ship.The ship is in low Earth orbit, and the player can enjoy the beautiful scenery of Earth and space.

Diluted is a 3/4ths puzzle adventure-action game where nightmares seep into reality. Play as Archie, an orphan bound to a living nightmare, and uncover the truth behind his matron’s orphanage as you explore twisted forests and corrupted memories.

SURA: Shattered Star is a sword-fighting action platformer set in space. Play as Sura, a mercenary grieving the loss of her comrades, and cut down everything that stands in your way.

Spectral Realm is a top-down tower defense Rogue game, where players need to play the role of an astronaut who has just landed on a different planet to block a constant stream of attacking native creatures and continuously strengthen themselves with the gems contained within their bodies.

An introduction to the world of Star Stuff, an upcoming puzzle game with a cosmic mix of automation and strategic action! Program bots to help you solve hand-crafted, purposefully designed challenges!

Jetboy is a retro supercharged jetpacking pixel shooter with a pumping metal soundtrack.

Escape the asteroid and solve challenging puzzles in Korlax Escape, a thrilling cartoony sci-fi game that puts you in control of a UFO. With shooting mechanics and moving hazards, retro-gamers and speed runners will love the exciting gameplay. Can you make it out alive in Korlax Escape?

A backpack building run-and-gun game! Fill your backpack with guns, blast away space bugs, and deliver noodles to hungry customers!

Lighark is a top-down action-adventure game where the protagonist pilots a spaceship, traversing through various wondrous planets and engaging in a revenge battle against the three factions of the galaxy. However, all of this is part of a larger conspiracy.

Guide the Gamma Brothers through waves of alien attacks, blasting your way home from work in this frantic twin-stick space shooter about brotherly love.

Embark on an epic journey in The Stranded Traveler, a 2D side-scrolling action-adventure game where you take on the role of a traveler stranded on a mysterious island. Explore dangerous environments, fight fierce enemies, and defeat challenging bosses!

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. *

PlanetDrop - A Tiny Space Adventure is a computer game where you command a spaceship in an orbit of a planet. Your primary task is to capture "drop zones" with your shuttles and commandos. You rely on stealth, agility and speed, rather than on firepower.

Guardian is a 2D action-platformer set in the fantastic land of Erstwhile for the annual LARP event. Our heroine, Aria, dons the identity of Arcas and sets out on a quest to rescue the Greek Pantheon! With clever platforming and careful upgrades, help Aria achieve her goal and return home.

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.

Sanctum Arcadia is a game where you must fight your way through increasingly dangerous zones filled with enemies, hazards, and mystery. Sanctum Arcadia has a unique but still familiar progression system, challenging and engaging combat, all in a smooth Arcade-like experience.

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.

Pewt 'em Up! is a retro inspired arcade space shoot 'em up with lots of upgrades, achievements, extras and more.

KNOW YOUR ENEMY. FIRE YOUR CANNONS. A spaceship management and combat game. As the Captain of Silver Wolf, command your crew and use your energy strategically. Change your future with your decisions. Arm your ship and strengthen its shields. Survive in the solar system full of dangers.

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.

In Anthèse, an Action Light RPG, you explore a ruined world alongside your faithful companion. On a mission on a flying island, Emöke must eliminate a particularly dangerous predator that threatens a village under his protection.

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.

Omega Warp is a sci-fi themed action-adventure, which takes place aboard an interstellar freighter. Explore, upgrade your skills and equipment, and uncover the mysteries surrounding the freighter's loss of communication with the base of operations on Earth.

Still reeling from the life-changing events of the previous episode, Gail seeks out a safe haven with her father in the Delta Pavonis system. However, she soon learns that the politics of Planet Leto can be as treacherous and unpredictable as the local weather.

So you know that one rover that landed on Mars? Yeah this isn't that.