Top similar games like Planet Nine:
Planet Nine $4.99
Control a customizable mech while exploring an alien world in a top down view. Your mission, set by an A.I. is to save the Ninth planet from an alien invasion. Gain levels, find loot and discover the history behind the Ninth Planet.
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Mech Arena$4.99
Mech Arena is an arcade shooter game taking place in an arena and dispatched on several rounds. Kill waves of enemies, upgrade your mech and exploit the ever changing ground of the arena to try to become one of its champions.
Project AETHER: First Contact$12.99
As a threat from beyond looms over the solar system, take control of the AETHER prototype in this rhythmic and tactical space shooter - fusing classic arcade-style action with stunning 3D environments and an engaging sci-fi story.
A.N.N.E$14.99
Explore the mysterious and beautiful planet Gomi on foot or with your spaceship in this action packed platformer and space shooter hybrid. Your mission is simple, retrieve A.N.N.E and escape.
Space Warden$9.99
Space Warden is top-down shooter in space where whole environment can be destroyed. Use lots of weapons which can burn, stun, damage, explode enemy ships, bases and terrain. Use turrets to defend your base and complete various missions.
Brass NecessityFREE
In this top-down, sci-fi shoot 'em up, you'll have to solve combat-based puzzles in order to escape the cursed undead. You've only got your laser as a weapon and crystals to change its element. You'll need to figure out matchups that work best against enemies to escape. Good luck, you'll need it!
∀stralbringer -Shaded Arkarium-$8.99
Shoot 'em up has reached a new frontier! 2D bullet-hell sci-fi action shooter with mouse control and multiple buttons!
Keplerth$14.99
Welcome to Keplerth! Try to survive on a hostile alien planet in this 2D sandbox RPG, where you can choose to live alone or fight side by side with your friends in the online multiplayer mode. Survive, build, farm, fight, and explore your way to victory in this open-world adventure!
Hyperspacer$2.99
Travel through space in your own spaceship, land on planets and moons, talk to NPCs, perform various tasks, collect scientific data, gather minerals, acquire better equipment, upgrade your ship, advance your skills, and delve into the main storyline.
Biodrone Battle$0.99
Fight hostile drones that try to keep their recently gained autonomy by either shooting or morphing into them.Biodrone Battle brings classic top-down action rooted in the pioneer gaming era of the 1980s into your living room.
Kick Ass Commandos$9.99
Lock and Load! It's time to Kick-Ass. Grab your machine gun, flamethrower, rocket launcher, and grenades. Assault the enemy base and free commandos to join your team while you destroy everything in sight. Make your way through enemy bunkers to rescue your comrades, and kill everyone you encounter!
Powernaut VANGARDT$0.99
Fight for your life in this state-of-the-art 8-bit platformer!
BroodStar$10.99
BroodStar is a classic arcade shmup with roguelike elements. Acquire crazy item combos, encounter strange events and fight challenging bosses on a quest to destroy the living planet, the BroodStar.
Blackwind$24.99
Blackwind is a top-down sci-fi action game that puts you in the shoes of a teenager trapped inside a prototype battle armor suit during an alien invasion. Face off against enemies, cut through their ranks, and fight back to stop a planetary invasion.
Mutant Gate$0.99
After years in cryoprison, Dr. Green awakens on a mutant-infested Earth colony. Seeking redemption and his estranged daughter Anna, he battles through a ravaged planet in a 4-hour campaign of intense combat, encounters, and adventure. Mutant Gate has hybrid tile/ASCII visuals & Steam Deck support.
Ultimate Starfighter$4.99
An unknown Alien Race has launched a failed attack on Earth Station Alpha and are regrouping! Fight off the incoming fleets, discover where their ships are being constructed, and launch an assault! If Earth Station Alpha is destroyed, the planet will be lost and humanity exterminated.
BulletGarden$3.99
BulletGarden is a 2D vertical shooting gamewhere you explore a planet where the seeds you sow blossom into weapons.You can handle about 300 different types of weapons,each with its own unique characteristics.
Veil Runners$4.99
Veil Runners is an action roguelite arena auto-shooter where you fight through waves of creatures to reach the next planet in search of the source. Level up, loot, buy randomly generated items and more to upgrade your character and units into an awesome and game-breaking build.
The Last Man$6.99
A topdown survival space horror where a single enemy hit can end your life
STAR SHREDDERS$0.99
STAR SHREDDERS is a prologue to an extensive, story-rich SHMUP with strategic elements. Play as Clash, leading the Valkyrie force in the onset of an epic interstellar war. This teaser sets the stage for a larger adventure.
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.
Under The Stars$2.99
A space theme of a small casual shooting game. There are two perspectives, the character and the ship. The player can control the character/ship, dodge or shoot enemies, and replenish energy and various items consumed by collecting. Collect discarded parts and items to enhance character abilities.
Top Shot$2.99
A Sci-fi Arcade shooter, fly around the screen space and shoot down enemies, gather minerals and exchange them for skills and ships
Astro Traveler$4.99
A retro style space sim where you mine, trade, bounty hunt, pillage, and explore. In this game you choose you own path as you navigate the galaxy while balancing faction alligence and legality of your actions.
Rome 2077: Space Wars$0.99
Unknown planets, whole new universe, with hundreds of ships to fight and explore, special abilities and ships craft. Rome 2077: Space Wars is a top-down shooter with ship craft, storyline, RPG element, survival endless mode and much more!
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.
CyVengeFREE
CyVenge is a fast paced and action packed rougelite arena shooter. Choose from many upgradable weapons and abilities and help Cy fight against numerous waves of enemies!
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.
UFO: The Ranch$0.99
Somewhere in South America, aliens have made contact. Visitors have not come in peace to Planet Earth... Open world third person shooter (TPS) game. Single player video game, compatible with Windows 8 / 8.1 / 10 / 11 The game locations are inspired by real places in South America.
Diabolic$7.99
The game is set in a dark pixel fantasy world. Destroy hordes of monsters ruling over what once was a prosperous land. 10 levels filled with various enemies await, you, each requiring a different approach to defeat. Like in any RPG, leveling up is the core element of the game
AstroWings: Space War$7.99
"Astro Wings: Space War" is a retro style, exciting and authentic bullet hell, space shooting game.This game brings you the thrill, urgency and fantastic experience of an authentic arcade shooting game.
Star Squadron: Student DriverFREE
A tongue-in-cheek space shooter where your only weapon is a ping pong cannon. Survive 15 levels and you might just earn your pilot's license.
Robot Warriors$9.99
Slash and shoot everyone in your way in this hack and slash game. Kill a lot of enemies and find a way to the exit to complete missions.
Galaxy Kingdoms$6.99
Galaxy Kingdoms is an action/adventure shooter. Feel the journey of a bounty hunter as he explores the galaxy in search of quests and treasure. Strengthen yourself by buying new weapons and armor and then take on more powerful enemies.
Valkyrie Squad: Siege Breakers$5.99
"Valkyrie Squad: Siege Breakers" is an exhilarating top-down shooter survival game. The mission is to break through the enemy's fortified defenses and face extreme survival conditions. you will lead this brave squad, utilizing each member's unique skills and defeat powerful enemies!
PhaigeX: Hyperspace Survivors$4.99
PhaigeX is a fast-paced "Bullet Heaven" space shooter, tasking the player to explore space sectors and contain a rising incursion of rogue AI-controlled units. Pilot a variety of ships, call in the support craft, and use a myriad of upgrades to lay down heavy firepower towards the enemy forces.
Starcom: Unknown Space$24.99
Starcom: Unknown Space is an action RPG of space exploration and adventure. Build your own starship while discovering an epic story in a universe of strange mysteries, alien factions and uncharted worlds.
Angles of Death$0.99
"Angles of Death" is an action RPG and roguelike game. It blends the intensity of real-time combat and the unpredictability of roguelike mechanics. The pixel art aesthetic adds a nostalgic yet modern visual appeal, while the atmospheric soundtrack immerses players in a dark and captivating world.
Proxy Air Force$3.99
Proxy Air Force is a 2D Arcade Shoot Them Up game based on the story of the world war which broke out between the US and CES countries in 2020.
The Pulse of EvilFREE
Find yourself on a mission exploring the depth of an ominous forgotten mine. You arrive barehanded but quickly find the tools needed to go deeper. Destroy the infected living parts of the mine and face the final threat and complete your mission.
Zomborg$4.99
It is the year 2000, and the United Nations has established several quarantine zones around the world to stem the tide of an unknown virus pandemic. The United Nations called upon a private military company, highly skilled mercenaries to retrieve the data and uncover the secret of the zone.
Ascending Madness$7.99
Ascending Madness is a hardcore, psychedelic, twin-stick shooter adventure. Assassinate a renegade scientist who appears to have gone completely insane.
JUSTICE LEGION$2.99
Action strategy game Shift system robot battle Defeat the enemy for justice!
Cosmic Ray$2.99
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.
Clid The Snail$19.99
A quirky top-down shooter about a grumpy, humanoid snail armed to the radula! Experience a dark fantasy fable and explore an unforgiving miniature world to exterminate the slug plague with an arsenal of badass weapons… and a unique set of snaily skills.
Space Maxwell: Arcade$2.99
Shoot your enemies and try not to let them multiply themselves and turn the game into a chaotic space battle! Space Maxwell is an arcade shooter where your spaceship has the ability to destroy or to multiply your enemies. Climb the leaderboard and try to survive as long as you can!
Foreign Fortress$9.99
Escape from the Alien, find necessary items that allow you to escape and cure the virus, and bring hope to humanity, yourself, and your family.
Light Unseen$1.99
An underground adventure with magic and fantasy-like monsters with a story where actions affect the outcome
Entropy$1.99
Shoot. Build. Upgrade. And shoot some more. Pixelated chaos on a monster-filled space station.
Xander the Monster Morpher: Universe Breaker$4.99
A Monster-Catching top-down shooter! Fuse monsters together to create the ultimate team!
Tesla vs Lovecraft$14.99
Tesla vs Lovecraft is an intense top-down twin stick arena shooter from the creators of Crimsonland and Neon Chrome. Play as the enigmatic inventor Nikola Tesla harnessing the static energy to power up Tesla-Mech and give the lovecraftian nightmares a lesson in horror!
Tesla Force$16.99
With science as your super power, charge up your coils and zap into action! Tesla Force is a rogue-lite top-down shooter featuring endless procedural gameplay with tentacle splitting action. Play as Tesla, Curie, Lovecraft and Shelley and blast the cosmic horror back into the galactic abyss!