Top similar games like RaidersSphere4th:
RaidersSphere4th $19.99
In the distant future, humanity has turned Venus into a livable environment. However, not all is well on Venusian soil as political intrigue pushes the way to help a young girl, the ace pilot known as Sonic Venus, to find the whereabouts of her missing father.
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Coreupt$24.99
Unleash your powers, choose your destiny, and fight! Jump into an over-the-top struggle for the fate of the universe - master insane combos, obliterate other players online, and top the leaderboards in this fast-paced fighting game.
The Dark$1.99
You come round as your escape pod plummets into the inky waters of a distant flooded planet. Comms are down and power failing. You have no choice but to head out into.. the dark.
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.
The Emerald Tablet$19.99
Enter the world of alchemy in the daily adventures of the money-hungry but good intentioned Misty, the arrogant adventure-seeking Gladys, and the explosive "expert" Winifred.
Space Pilgrim Episode III: Delta Pavonis$1.99
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.
Turret Girl$6.99
This is a romantic visual novel about her struggles to find love and acceptance in a hostile world, with a Match3 Jewels mini-game to break up the action.
NIGHTSTAR$9.99
This VR title is a unique room-scale third-person shooter. Control the Nightstar by moving your Motion Controller in space, shooting a vast variety of enemies, and avoiding obstacles and enemy fire. Play through 8 levels of non-stop action and immortalize your name on the global leaderboard!
Evochron Legacy SE$24.99
Advanced Space Flight, Combat, Trading, and Exploration Simulation. Set in a vast explorable universe, Evochron Legacy offers freeform gameplay with many diverse objectives and paths to choose from.
Sunrider: Mask of ArcadiusFREE
As Captain Kayto Shields, embark on a galactic voyage of heroism and survival. With his home world destroyed and his nation conquered, the inexperienced Captain Shields, and his newly minted vessel, the Sunrider, are left as the only hope against a galactic evil intent on subjugating all sentient life.
The Fall$9.99
Take the role of ARID, the artificial intelligence within a high-tech combat suit. The Fall is a unique combination of adventure-game puzzle solving and side-scroller action, all set within a dark and atmospheric story. Get ready for a disturbing journey as you explore the world of The Fall.
Belt Colony$19.99
The year is 2040. You, an ex-sergeant, have signed a contract with a large mining corporation in the Belt. Mine ore, build out your outpost, travel to nearby asteroids and collaborate with other belters.
Gaia$19.99
A sci-fi base building survival game, featuring raids, agriculture, intelligent AI, natural disasters and more.
DRAINUS$14.99
This is a side-scrolling shooting game in which you take control of the "Drainus", the Kharlal Empire's most cutting-edge fighter with the ability to absorb energy bullets, and take down the enemy ships zipping through space.
Project Nimbus: Complete Edition$6.99
Project Nimbus is a high speed mech action game set in a post apocalyptic world. Players control 'Battle Frames' - humanoid battle suits armed with an arsenal of weapons.
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.
Super Alloy Ranger$9.99
Super Alloy Ranger is a 2D side-scrolling action game. Play as Marksman Kelly or Combat Robot No.2 to challenge different levels within the dangerous Machine Empire and unlock new weapons. Use Kelly’s shooting and No.2’s deathblows to defeat abnormal Machine Bosses!
ELYSION$11.99
Do you like watching cute girls kick butt? ELYSION is a new 2D Sci-fi side scroller shooting game! ! While the girls are all unique and cutesy, journey with them to delve deep into the story and world of ELYSION! Your mission to save the world begins here!!
Xeno Runners$4.99
Looking fo a challenge? Fly fast. Die a lot. Race against the timer. Master a bunch of racing tracks. Fly faster. Die a bit less. Set the fastest time. Be the best “Runner” on a planet that’s clearly not Earth… Or just enjoy a relaxing sunset while experiencing the freedom of flight.
Missile Dancer 2$14.99
Missile Dancer 2 is a new sprite scaler shmup that combines rail shooter and caravan STG.
LunarLux$19.99
Experience a sci-fi action-adventure RPG on the Moon in the year 30XX! Join Bella in a story of science, truth, justice, and trust, as she travels the silver globe to find a way to save humanity from Comet Coda! It's time to unleash your Lux!
Melt Them All$1.99
Melt them All is action rogue-lite where you must survive as long as possible to maximizing your energy production in the process. Automate the resource collection and upgrade buildings and weapons to kill, mine and produce even more effective.
Earth Analog$24.99
In this space flight adventure game you take control of exploration vessel Eurisko XI on a quest through deep space. Visit fascinating fractal-based exoplanets and solve their mysteries. Fly through dangerous landscapes. Collect artifacts to unlock new pathways. Your goal: find our new home.
Freedom Planet$14.99
Fight your way across the celestial world of Avalice where cats are green, motorcycles drive up walls and monster girls do most of the buttkicking! Freedom Planet is a cartoony, combat-based platform adventure that pits a spunky dragonoid and her friends against an alien attack force.
Spirits of Xanadu$4.99
At the farthest edge of the explored universe, the research ship Xanadu slumbers in orbit around a mysterious planet. Her systems remain active but there has been no message from her crew for months. Now a lone operative has been sent to wake the Xanadu and bring her home to Earth.
Telvoikai$1.99
You've been tasked with collecting data on an alien planet. Choose between exploring the jungle tropics or navigating deep into the bioluminescent sea.
Q.U.B.E. 2$24.99
Q.U.B.E. 2 is the sequel to the hit first-person puzzle game Q.U.B.E. You are Amelia Cross, a stranded archaeologist who has awoken among the ruins of an ancient alien landscape. With the distant help of another survivor you must solve the puzzles of this mysterious world and find a way back home.
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.
Star Girl Proxima$4.99
Become a magical girl hero and defend the alien world of Proxima Centauri b in Star Girl Proxima! An 8-bit style action-platformer.
Star Farmer: PrologueFREE
In this bullet heaven, farming adventure, play as a powerful Warlock who has a side hustle harvesting plants in space.
Orbital Invaders$0.99
3D Sci-Fi arcade Shoot'em up game. Destroy asteroids and aliens. Shoot them all!3D arena shooter with multiple worlds. Spaceship simulator and shmup arcade style game.
Protect the Earth$3.99
You are the best pilot in the space force and the earth needs you to protect itself from an alien attack. Protect the earth and then go to the invader's planet to finish them off once and for all.
Project Terminus VR$19.99
Project TERMINUS is a VR game that offers a very gripping horror experience that goes beyond a simple jump scare, It offers many elements taken from classic survival experiences, set in post-apocalyptic Paris and roots it in an engaging story-driven campaign that can be played solo or with friends.
Liberator TD$9.99
Liberator TD is a glorious mix of tower defense and top down shooter genres set in a sci-fi world. Tasked with the mission to establish a new colony on a distant planet, you find yourself in grave danger of the local wildlife.
Princess Maira: Initiation$0.99
First instalment in the series of 2D action side-scrollers, taking place in very distant galaxy and not so distant future. Gameplay main hallmarks are fast-paced laser guns shootouts, punch 'n' kick combats, managing obby-like obstacles, using wits in overcoming deadly traps and witty dialogues.
KELVIN$7.99
Escape a distant planet before it is swallowed by a black hole
Evochron Mercenary$14.99
The life of an independent mercenary is rarely without excitement. Your spacecraft awaits and your adventure begins in the Sapphire star system.
DeliSpace$9.99
Deliver packages... in space! Test your agility by navigating through different galaxies carrying diverse packages and upgrade your ship. Will you become the best courier in the universe?
Desert Child$11.99
You are a hungry, young hoverbike racer who needs to get off Earth before it E-X-P-L-O-D-E-S. Hunt bounties, throw races, and do whatever you can to get to Mars and win the Grand Prix.
ELEA$9.99
Experience the surreal story of Elea. In this first-person Sci-Fi adventure you play as a space scientist recovering your lost husband. Venture out on a curious interstellar journey, full of devastating memories and startling secrets.
Somewhere on Zibylon$9.99
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!
Mud River$5.99
Mud River is a horizontal 2D Shoot‘em Up game. The Rio Doce (Sweet River) was a paradise for mankind and animals, but now it has become a territory destroyed by the unscrupulous activities of Dr. Wellin. This is Pacal's first destination, ascending the Rio Doce preventing its complete destruction.
URO$9.99
There was a world where URO alone lives. However, the color and sound disappeared from the world from one day. When wearing a glowing ornament, URO is wrapped in color and music I notice that music and colors are gone from the world. To regain music and color to the world again, I started running running my music.
Spacebug$3.99
Embark on an interplanetary journey in this space shooter game with many levels to pass or a Sandbox mode to break your record each time you play!
Star Leaping Story:prologueFREE
Players will use a unique dash system to navigate through various obstacles! The main challenges lie in maneuvering skills and reaction speed, utilizing it to complete different levels in the game, gradually piecing together the truth of the story. This is a free-to-play prologue version.
CHAOTIC ERA$16.99
AT THE LIMITS OF EARTH, AT THE EXTREMITY OF HEAVEN. A REAL-TIME STRATEGY NIGHTMARE.
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.
Out There Somewhere$9.99
You play an explorer stranded on a dangerous alien planet. Low on fuel, your only hope for escape is to find the planet’s core in this incredibly clever action-puzzle-platformer.
Planet Lander$0.99
Maneuver your space ship trough lunar caves. Each level is set on a different planet. Try to reach the ending landing platform. Thrust your ship wisely to avoid turrets shooting laser beams and moving space debris.
Beyond Contact$19.99
A fiercely formidable sci-fi survival game, set on a hostile alien world that wants you dead! Alone, or with a crew, do you have what it takes to survive?
De-Void$7.99
De-Void is a first-person adventure game, where the player unravels the mysterious circumstances surrounding the disappearance of a remote space colony crew.
Planet Diver$3.99
Planet Diver is about an adventurous daredevil tackling her newest obsession: Interstellar wing suit diving. With her close robotic companion Buddy she'll travel across space to seek out the most dangerous planets and their respective chasms to dive in.