Top similar games like Astronaut Assault:
Astronaut Assault $9.99
Dive into Astronaut Assault, a third-person Sci-Fi tower defense game, and battle against relentless enemy waves in diverse arena settings. Arm yourself with an array of turrets, traps, and gadgets to halt, hinder, and outmaneuver your foes.
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Metal War$0.99
This is a fast-paced top-down shooting and tower defense game. You need to customize and upgrade your chariot, build defensive structures to protect your base, explore the world and destroy all enemies! Don't forget to come back and defend when the enemy attacks! Can you make it to the end?
Stars End$19.99
Stars End is a player hosted/solo sci-fi survival game set hundreds of years in the future in a star system colonized by humans. Come and join us for crafting, construction, missions and PvP on the wild frontier...
Forgotten Seas$24.99
You are lost in the Bermuda Void, where the ocean is endless and dry land precious. Craft your Ship-in-a-Bottle, then experience survival on the high seas. Sail for new land, build camps, hunt for treasures, trade for goods - then defend your ship from dreaded pirates stalking this strange realm!
迫降Landing$4.99
Our ship has suffered an unknown disaster and has been forced to dock on the side of this planet, and all you have to do is lead us to repair the ship and continue its voyage, however, the danger is getting closer and closer without our knowledge......
Roman Conquest: Rise to Power$4.99
Roman Conquest: Rise to Power is a turn-based strategy game in which the player can feel like a great commander of the Roman Empire. Lead a legion and go with your army to recapture the occupied lands.
Until Last Tomorrow$24.99
UNTIL LAST TOMORROW is an open world action and adventure game that takes place here in Brazil, in the city of Goiânia, in an extremely dangerous environment, where you will have to survive the pandemic that has taken over the world.
Mutation Madness$5.99
Welcome to the World of Mutation Madness, where chaos reigns, viruses evolve, and survival is the ultimate challenge!💥Defeat waves of mutating viruses and save Cell City from the Madvirus outbreak!🦠🔫 Upgrade your gun and use powerful items, while discovering virus intel!🧪
Legendary Realms: A Fantasy World Odyssey$1.99
Legendary Realms: A Fantasy World Odyssey is a multiplayer sandbox adventure game. Create your own character, select classes, and take on quests to earn rewards and level up. With a range of equipment and multiplayer options, it's an immersive experience that will keep you engaged for hours.
Antiprism$17.99
Antiprism brings classic shoot 'em up mechanics to VR and combines them with innovative single-player twin-ship gameplay. Control two ships at once as the pilots Jexen and Malik shoot hordes of enemies, dodge enemy fire, find and upgrade items, and beat hard bosses on their journey through The Gone.
FUBG: FIGHT UNKNOWN BATTLEGROUND$4.99
FUBG is a Multiplayer Shooter Game by GameX with Seven Different Game modes. 1. Team Death Match 2. Capture the Flag 3. Conquest 4. RUSH 5. Kill Confirmed 6. Free For All And 7. Search & Destroy. Player can Play strategic battles across diverse maps and various combat styles to claim victory.
Battle Jacked$9.99
Enter the simulation and experience a whimsical yet tactical combat and epic battles. Learn to fight, strategize, and manipulate the simulation to gain an advantage in battle. Do you have what it takes to fight zombies, knights, giant trolls, demons, space pirates and more?
Craft Hero$4.99
Gather resources by day, build and recruit by noon, defend your village by night! A new minimalism sandbox survival with countless new ideas – Craft Hero
Dyson Sphere Program$19.99
Build the most efficient intergalactic factory in space simulation strategy game Dyson Sphere Program! Harness the power of stars, collect resources, plan and design production lines and develop your interstellar factory from a small space workshop to a galaxy-wide industrial empire.
Breakers World$9.99
Upgrade your power armor, recruit a loyal crew, and build a spaceship to escape the oppressive management of a dystopian barren planet. Breakers world features open-ended sci-fi RPG character development in a unique world full of rust, danger, and opportunity.
Trace Hunters$5.99
Trace Hunters is a third-person shooter where you pilot a futuristic combat vehicle. Outnumbered and alone, blast through hordes of enemies to discover precious resources and traces of lost technology. Unlock new weapons to take on even greater challenges!
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.
Critical Damage$5.99
Fascinating and entertaining space action game.
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!
impossible island$0.99
You're an ex-pirate stranded on a mysterious island and you need to hunt and build houses to survive. You must face challenges and enemies. You must solve mysteries and open locked doors. Explore this mysterious island alone or with other pirate friends
Circle TD:Defence War$5.99
A tower defense game.In the wave after wave of enemy attacks like a tide, constantly configure defense tower ties, player talents, props and equipment, build a powerful defense position, and eliminate the enemy before they fill the map!
Keezeh The Spector of Time$2.99
Fight your way through waves of hostile tribal warriors, dangerous creatures and explore uncharted islands while trying to reach your spaceship in this indie adventure / RPG game.
Asha Empire: Exodus$14.99
Embark on an action-packed journey in Asha Empire: Exodus. As Commander Rexis or Kyra, explore 6 sectors of the Sirina moon, collect vital databanks, and face rebels and mutants. Navigate intense battles and strategic challenges to ensure the Empire's survival.
Planet ExplorersFREE
Planet Explorers is an open world sandbox adventure RPG game set on a distant planet. The game uses a new OpenCL calculated voxel system to allow players to change the terrain in any way, create new objects such as weapons, vehicles, objects, and do it anywhere.
Cube Land Arena$4.99
The kingdom of Cubia call for your help, come to this vast kingdom where you will face strong enemies and hard challenges, you are the chosen to defend the cristals of life and finally bring peace to reign of Cubia.
Legends of Ellaria$9.99
Legends of Ellaria is a unique blend of sandbox action-RPG and real-time strategy. Build a new kingdom for your people, construct and manage its cities, command your troops in epic battles and join them fighting in third-person action, and live adventures in an immersive high fantasy world.
Tachyonest: RewriteFREE
Tachyonest: Rewrite is a remake of Tachyonest. You pilot the SS. Total Unit, a ship designed for constant action and quick turns. To keep surviving, you must be constantly rocketing around the maps. There will be metal-shed. (its like bloodshed but for metal, hehehe)
WarShape$2.99
WarShape is a "Top Down Shooter" where you face growing hordes of enemies. As you progress, the weapons and defenses of everyone in the arena evolve, starting from primitive equipment to technological weapons. Build, find weapons, recruit allies and buy upgrades to survive the attacks.
Hell Division$11.99
Hell Division is a game from the 3rd person, which is a battle of combat drones.
Planetary Defense Force$5.99
Jump into the shoes of an interplanetary defender! Grab weapons, build towers, expand ground economics and protect planets from space invasions in this unique mix of twin-stick shooter, tower defense and city builder game.
Space Pirates and Zombies$9.99
Explore a randomly generated Galaxy populated with factions, enemies, missions, and items providing you with a unique experience each time you play.
Space Bunny Explorers$4.99
Space Bunny Explorers is a third-person adventure game with base building aspects and creature collection mechanics. As an adventurous Space Bunny, you will explore a planet and help a research team build and expand bases on the 4 main islands of this world.
Decision Legacy Collection$9.99
All the games in the classic Decision series bundled together. From the zombie-ravaged streets of the original Decision to the brutal medieval battlegrounds of Decision Medieval, this collection delivers the raw, blood-soaked combat, base building, and survival gameplay that hooked Flash game fans.
Space Shooter 24$0.99
Join the war in the depths of space with Space Shooter 24! Customizable ships, realistic graphics, and breathtaking action await you. Take action now to save the galaxy.
SurrounDead$11.99
SurrounDead is an open world survival game. Taking place in a world ravaged by an apocalyptic catastrophe. The dead reign free and will stop at nothing to kill you.
Laboratory of Nightmares$0.99
You are one of the best fighters of the GIBAR unit, and therefore you were sent to destroy a secret laboratory guarded by armed soldiers. This is a dynamic game with a top view in which you have to survive in a secret laboratory and find a way out of it.
HappyHazardFREE
A survival adventure game where players explore vast stages, solve puzzles, and find treasure while avoiding or battling enemies. Limited resources and inventory management require strategic play, offering tension and challenge without horror elements.
Battle for the Droid Station$0.99
Battle For The Droid Station is a RPG shooting game now available on Steam. Feel the adrenaline as you run and gun down hundreds of rogue mechs and droids causing mayhem on the space station. Take control of your droid character and try to clear the space station from invading droids and robots.
Galaxy on Fire 2™ Full HD$7.99
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.
Blood Waves$9.99
Hardcore and bloody shooter where you will have to repel the attacks of the living dead using the destroying traps, defensive barricades and also weapon of close and long-range combat.
Cryowakers$9.99
Cryowakers is an exploration and survival game that takes place in a randomly-generated futuristic world. Play solo or with seven other players to explore, survive, build, and fight to uncover the truth behind the cryosleep experiments.
Fantasy ShootoffFREE
Fantasy Shootoff is a free PvPvE fantasy game where you fight against enemy creatures and bosses, use crazy weapons, experience a thrilling story, and hang out with your friends on one big map.
CaptMeow$0.99
Capt. Meow is an Action RPG game
Hero Vs 1000$2.99
Experience the adrenaline of facing countless hordes of enemies in an unparalleled challenge! Command a knight, a pirate and a soldier in epic battles, each with 1000 opponents waiting to test your courage and skill.
Layer HuntFREE
Layer Hunt is a singleplayer, survival sandbox game where the goal is to survive and hunt down all the bosses. To reach your goal you will have to mine, craft, build, farm, fight and explore for new abilities and resources.
Eden Crafters$19.99
Embark on a journey of survival, crafting, and automation in Eden Crafters, a solo and co-op open-world game that challenges you to turn a hostile planet into a habitable haven for humanity. Temper the climate, create a breathable atmosphere, and turn toxic lakes into water: shape a new world!
群星战纪: 最终防卫线 - STARS ERA: THE FINAL DEFENCE$0.99
We will be the last guardian of the planet, here will be our final line of defense. The Clyde Star Spaceguard will fight to the last moment.
Astro Ike$0.99
Astro Ike is an exhilarating single-player, third-person zombie wave shooter that will immerse you in an intense battle for survival. Step into the shoes of Astro Ike, a fearless protagonist, as you face relentless waves of zombies. The challenge awaits—how long can you endure?
Undead zone$2.99
Survive through as many nights as possible with a card system that you place on the field. You can place defenses and buildings such as farms to feed the last citizens who are fighting for the collective defense.
星旅：前奏 Wandering Planet: Prelude$3.99
Star Trek: Prelude is a space-based game that builds defense towers on earth to defend against alien invaders called Black Ember.
McDROID$14.99
Farm, Build, Defend, in the Galaxy's only Arcade-Tower-Defense.
Fantasylandia World$0.99
Fantasylandia World is a big open world map which takes you back about 4000 years ago!