Top similar games like Astral Space:

Blue Fish is the main hero. When he destroy an enemy, his health and score will increase. But if the enemy bullet hit the blue alien, his health will decrease. Also each enemy has different characteristics and their hit damage is different.

You were chosen for the Planet Keeper Program. Defend the planet in this retro-inspired incremental game. Upgrade our defenses, destroy our enemies, ensure our future.

Planetstar Warrior is a horizontal scroll-space shooter with numerous powerups and a gradually increasing level of difficulty. Defeat all enemies on each level to progress.

Space-themed action and skill game.

Control a rocket in this fast-paced 2D game, blasting meteors and dodging obstacles to achieve the highest score possible. Take on exciting challenges and climb the leaderboard!

ShapeNeon Chaos is an old school style space-shooter. You are a ship facing off waves of deadly enemies. This game was made to give you a shot of adrenaline in a couple of minutes. Lots of bullets and neon in an arcade psychedelic shooter!

Deep Space Cache is a short & simple semi-idle bullet heaven incremental asteroid miner game.

Compare your scores on the Steam Leaderboards! Navigate through obstacles like spinners, and oscilators. Apply boost to keep your rocket in the air. Speedrun against your friends, or try to get as far as you can in the game without crashing!

Shoot yourself into space as high as you can in this arcade game with a retro soundtrack!

Shadow Dash is a retro 2D action platformer with pixel-art characters on oil painting backgrounds and changing game controls.

2D action game where every click determines your survival! Enemy shapes - squares, circles and triangles - drop down from above and it's your job to destroy them before they overwhelm you. Each enemy has its own specific characteristics that force you to be ever vigilant and quick.

V-Shift is a high-intensity, fast-paced, battle platformer where mastering your movement is key to victory. Choose your champion and become the ultimate gladiator in a galaxy-wide alien arena. Master the V-Shift: velocity is damage; stillness is death.

In Elite Archery you play as an adventurer in search of treasures and wealth! Unfortunately the natives will not let you get their hands on their sacred treasures so easily!

Defend the planet from endless waves of alien ships in this retro arcade shooter. Craft the turret to best fend off the alien assault with shotgun, explosive and many more modifiers.

An arcade game where the player controls a spaceship and defends against waves of enemy invaders. The goal is to survive as long as possible, achieve the highest score, and progress through increasingly difficult levels.

ArrowBase is a Versus platform game where the objective is to send your arrow on your opponent. You can slide, dive forward, attack your opponent in close combat to propel him into the air.

This action packed sci-fi match three shooter is an homage to the classic arcade games we grew up with.

2D pixel art platform game in which you are in charge of eliminating alien enemies that try to conquer your planet.

Get ready for intense space combat in Quantum Gravity! Invert gravity to soar through space, engaging in long-range and melee battles against a variety of enemies. With four game modes, including Infinity Mode and multiplayer PvP, there's never a dull moment in this action-packed bullet hell game!

Crystal Cosmos is a side scrolling color-based space shooter. You need to match your ship's color to your enemies color in order to destroy them.

Protecting Us From Incredibly Worrisome Extremely Hostile Oddities...is what you will be doing with your football! Defend the Earth from the invading disciples of the Deranged Octopus, and learn the ultimate secret of the Universe.

A real-time strategy combat game based on the world of the Line Of Defense. Command a team of four Galactic Command marines in highly classified missions in space and on planets.

Battle 1-3 friends in the fast-paced & frantic arenas of Zero-G Gunfight. Pickup different guns that change how you move & fight. Dodge enemy bullets & avoid unique hazards as you strive to be the last one standing!

A retro arcade bubble-shooter where shots split bouncing bubbles until they vanish. Clear 40 handcrafted levels before the timer runs out or push your limits in Survival.

An intergalactic mission gone horribly wrong! The alien brothers tried to land on Earth, but got lost and are now in the middle of a human maelstrom! Control the UvU drone and bring order to the chaos in this unique adventure.

Birdoo: Feathered Fury is an indie action game were you assume the role of a bird embarking on a quest for revenge against the humans who wronged him. No longer will you tolerate being called a "flying rat" or being shooed away. It's time to exact your revenge!

Are you an old CRT monitor with a penchant for picking up boxes? Do you long for the days when you could place those boxes in an exit portal and engage your jetpacks early because you're impatient? If you answered yes to any of these questions, you're really weird! But try Workplace Hazard anyway! 

A fast-paced side-scrolling action game where you play as a plasma being on a mission to reclaim your stolen particles. Blast through enemies, upgrade your powers, and face epic bosses across cosmic worlds in a journey of destruction and revenge.

PegIdle is a Pachinko idle game! Aim and shoot your balls to clear all the pegs on the board. Recieve gold by hitting the golden pegs or by landing balls into the moving bucket. Purchasing auto ball drop will automaticly drop balls onto the board. Spend your gold on new balls and ball upgrades!

Gravity Maze is a physics maze game in which you get balls to the end by changing gravity

Terra Flame is a horizontal shmup inspired by the 90's. The feature is that you can switch between three types of weapons in real time.

The Jabco World has called Mr Jorries to shoot away all the Boinks invading the world. Jabco the star nation watching the good, hard and the bad. Your objective is to shoot away as much Boinks as you can. Swim, Fly or Swing your way through while testing your platforming skills No Worries Mr Jorries

You were the king. Now you are just a prisoner. Face your old enemies and escape from a magical prison. Jump, fight and survive in a challenging 2D platformer where every second counts to escape the past.

The Japanese just love their famous German-inspired Baumkuchen cakes, and hungry invaders from across the universe have discovered these delicious treats too! Are you up to the challenge of protecting the precious desserts from waves of alien attacks? Save the cakes!!