Top similar games like Planetary Defense:
Planetary Defense $0.99
Planetary Defense - defend the Earth from attack!
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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.
Fate of the World$9.99
Fate of the World is a dramatic global strategy game that puts all our futures in your hands. The game features a dramatic set of scenarios based on the latest science covering the next two centuries. You must manage a balancing act of protecting the Earth’s resources and climate versus the needs of an ever-growing world population, who...
They came from another planetFREE
A twin stick, fixed shooter, bonus hell, pixel art, shoot 'em up. Aliens have invaded and you, a blue housecat with a stretchy head, are, of course, our last hope. Fight the aliens on earth, under the ocean and in space in this risk/reward based fixed shooter inspired by old school shoot 'em ups.
Pink Devil$2.99
Join the fight against alien invaders in Pink Devil. Pilot an upgradable fighter jet through diverse environments, from oceans to deserts. Face unique bosses with distinct tactics and use weapons like machine guns, lasers, and rockets. Become the unstoppable Pink Devil and save the planet.
Vostok 2061$9.99
Vostok 2061 is a modern-graphics vertical scroll shooter. Gorgeous alien worlds, spaceships, and bosses. Explore mysteries as you listen to a great soundtrack!
A Void Shaper$3.16
Shape the void with the power of your cursor! A Void Shaper is an arcade game about avoiding shapes and killing them, while you collect upgrades. Unlock new enemy shapes and upgrades as you progress through the game and complete your collection.
Space Dragons$9.99
Choose your spaceship and defeat the alien threat that comes from the Moon. Blast your way crushing, ripping apart and exploding hostile aliens that are taking control of powerful weapons and military technology from Earth. Find the entity that controls the threat and make it explode into blood.
Ostallian Core$7.99
A modern omnidirectional space shooter with colorful retro-style ASCII art and light RPG elements, featuring optional permadeath.
Space Defense$0.99
You and your space troop have a tough mission to defend Earth from an alien invasion in this epic space war. Will you be able to guide your troops to victory?
Alien Death Mob$1.99
Aliens have invaded Earth! Towns, cities, deserts, they're everywhere! Take on the role of Earth's last super soldier and confront the alien menace in this intense twin stick shooter!
Arcade Classics$0.99
Collection of a few arcade classics, remade with a fresh and friendly looking art style and a beautiful soundtrack.
Shrimpwrecked$2.99
Riding an extra-terrestrial weapon disguised as a guitar, battle to the bottom of the ocean deep to turn the tides of impending worldly destruction; krill or be killed!
Where is Earth?$6.99
Where is Earth is a top-down vehicular combat game. Traverse planets, evading threats and obstacles, in search of your crew. Gather resources to assemble upgrades, landing vehicles, space craft, weaponry and support modules to aid you in your fight against an unknown enemy.
River Attack$0.99
River Attack is a shootting up style game 2D, which combines harmoniously colored scenes with aerial shooting battle! Evolve your ship to defeat an alien invasion that has the technology to control human combat vehicles. Will you be able to defeat an army of ships to save your girl and the planet?!
Dominus Solaris$2.49
In the year 2073, the Skolovan Empire attacked and subdued planet Earth. The rebels gathered technology from whatever they could to build a prototype ship, the Dominus Solaris. Now it's up to you, the ship's sole pilot, to fight and liberate the Earth from the usurpers.
Gravitators$9.99
Gravitators is a twin stick shooter game where you pilot ships and complete mission objectives to secure the future of humankind. Defend the Earth and travel through the galaxy to repel a relentless alien invasion.
Putin Destroys Alien$4.99
In an alternative reality where putin have been ruling russia for thoudsands of year. Democratic alien in space are trying to spread fake propaganda to the people and make them betray their great king.As the last heir to the throne of a great reign, have to do what is right and smite their ass.
Ark Defender$9.99
Roguelike missile command. Survive as long as you can aboard the Ark, humanity's last hope, in a hostile galaxy.
Star Aegis$0.99
A shmup without shooting. Reflect the bullets with one of your two shields. Bite-sized arcade action. Cover humankind's retreat and make it count.
Escape the Kreegan$4.99
Escape corruption and deliver truth to the people in the only way you know how. as a space fighter pilot! You steal a ship and flee, it falls to you to duke it out in space and deliver truth to the people. Restore peace. Restore justice. Save humanity and Escape The Kreegan!
Chicken Invaders UniverseFREE
A deliciously addictive core of finger-blistering shooting action, surrounded by delectable morsels of galactic exploration, spacecraft customization, and community competitions.
THE DREADFUL SPACE$0.99
A very action space war game, the mission is to fight the ships from other planets, the game requires a lot of skill to get rid of enemy shots and counterattack with all the cool features you can get in the game. The combat is intense and very agile, confronting your skills as a Battleship player.
Saturn Quest: Blast Effect$3.99
Saturn Quest: Blast Effect is a story-driven action adventure game set in the human-less galaxy far far away. Fly, climb, shoot, explore the world and fight the giant bosses in this 8 Bit style Space Opera, full of drama and epic.
Deathroids$2.99
Remember the golden age of arcades playing a game with all the classic 80's/90's space-shooting features. See how far you can go by destroying all enemy robots that are ready to planet earth attack.
Super Space Serpent SE$9.99
80's vector style Twin stick action with a booming soundtrack and permadeath.
Neon FighterFREE
Neon Fighter is a tiny arcade game packed with lasers and explosions, in which every few seconds you are forced to switch weapons automatically, making you have to adapt quickly to the new situation and re-evaluate your perspective.
Lone Bastion$4.99
A top-down space shooter where you switch between the wings of the space station you are trapped in to fend off endless waves of enemies.
Starfighter Aces$4.99
Massive battles rage in the stars! As a new pilot in the Allied Starfighter Corps, help turn the tide against a ruthless enemy. Hundreds of ships struggle to achieve victory in huge, team-based missions. Shoot down fighters, torpedo star cruisers, and duel famed enemy aces!
Gem Raider 2$1.99
Gem Raider 2 is an old-school move-and-shoot game. Your objective in each room is to destroy all of the Power Gems and return to the teleport pad to exit. Other Gems can also be destroyed to increase your score. There are 20 rooms and each of the 9 types of enemy Gems has unique weapons or skills.
Append$4.95
Destroy friends, strangers, or bots in this online multiplayer arena shooter. Collect powerups, combine weapons, build your defenses and obliterate the opposition. Hundreds of weapon combinations and multiple game modes.
Asteroids and Aliens$9.99
Asteroids and Aliens, Arcade Shooter pays tribute to the Arcade Classic Asteroids. Destroy the Asteroids, save the humans, kill Aliens with Lasers, Missiles, Smart Bombs, or Nukes. You have unlimited Missiles/Bullets but limited Laser firepower and Shields, they can be recharged collecting powerups.
SHINORUBI$24.99
Inspired by classic Japanese shooting games, SHINORUBI is a pure dose of adrenaline and frenetic arcade action with all the best aspects of Japanese bullet hell games, optimized for modern PC in ultra HD, all in a polished, accessible with many levels of difficulties.
1000 Waves$5.99
1000 Waves is a bullet hell arcade game that becomes progressively difficult as you approach the 1000th wave. Strengthen your ship by leveling up and conquer the final boss!
VOXEL Hunters$5.99
Fight, die, repeat! VOXEL Hunters is a top-down roguelite arena shooter. Enter small, fast-paced arenas where you must eliminate all enemies. Engage in quick, action-packed missions, experiment with powerful abilities and augments, and unlock unique cosmetics to customize your appearance.
ShapeNeon Chaos$1.99
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!
Hen in the Foxhouse$4.99
A silly top down shooter filled with chicken demolition.
Alien Outpost$6.99
Alien Outpost an adrenaline-pumping 2.5D twin-stick shooter places you at a remote outpost besieged by relentless waves of alien invaders
打怪! Beat the Mons!FREE
BEAT THE MONS is simple pixel auto shooter. Dodge, shoot, beat all these monsters and earn score! Life is not much else...
While you are Downloading$0.99
A quick and action paced retro styled arcade shooter, or shoot 'em up (shmup) if you like. Perfect to play in short chunks, like when you are waiting for big games to download.
Spacebase19$1.99
Defend Spacebase 19 from the asteroids swarming down on the station! Shoot down waves of stones and equip different powerful weapons. How many waves can you last? A simple nostalgic retro arcade turret defense shooter.
Cosmo Clash$2.99
Play as one of 4 trigger happy animals, in a primal duel for honor and glory! Bring your friends locally, or duke it out on Steam Remote Play! 2 to 4 Players can shoot, dash and bump their way to quick victory! You'll need speed, reflexes and viciousness to be KING of COSMO CLASH!
Ozone Guardian$2.49
A new twist on the classic arcade shooter, with a variety of character choices and an upgrade system. Control your spaceship with your mouse & shoot with click - the only limitation is your hand speed! Face waves of creative enemy ships and stimulating bosses, and protect the ozone, Ozone Guardian.
Space Survival$0.99
Space Survival is the next great SIMPLE 2D casual space action shooter where you have to defend against wave of enemies, have fast reflexes and strong will to win. It is great way to relax, but also a great challenge. How long can you stay focused?
Hover Ship$0.99
Hover Ship is an arcade game in which you have to control a floating ship on an obstacle course, collect coins and set new records.
GUNPIG: Firepower For Hire$0.99
Sci-fi top-down twin-stick shooter with 9 weapons, 3 alts and secret hidden collectibles!
Cube Space$0.99
Cube Space is a minimalist arcade Shoot `em Up game set in space. You control a spaceship and your task is to score as many points as possible by destroying enemies and obstacles in your path.
CometSoldier$1.99
"Comet Soldier" is a 2D top-down view action shooting game. Advance through the battlefield and defeat the bosses that await.
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.
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.
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.
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.