Top similar games like Polybius Invaders:
Polybius Invaders $9.99
Take on the Evil General Goo as he sends waves of Retro Space Invaders your way in this Action-Packed Retro Styled Arcade Shoot 'em up.
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Bullet Hell Monday: Black$8.99
This is a high-difficulty bullet hell shooting game and a sequel to "Bullet Hell Monday." It offers an exciting experience for players who demand advanced skills and precise strategies. As a common system, six types of special weapons are equipped, expanding the player's tactical range.
Ayako's Mission$0.99
Ayako's Mission is a 2D Top-Down Shoot'em Up game based on the story of the war breaking out between the two territories called, AY Corp and ATO Corp. where you must defend your territory against the invaders.
Space Strider$2.99
Space Strider is a 2D Sidescroller Shoot 'em up with Roguelite elements, where you beat hordes of enemies and defeat unique bosses. Unlock, upgrade and level up your Spaceships to become the ultimate Space Strider!
Impact Trial: First Encounter$4.99
Impact Trial: First Encounter is a exciting mix of bullet hell and narrative adventure in a retro sci-fi world. Face waves of enemies, make story-affecting decisions, challenge yourself with various difficulty levels... and more secrets. ¡Your story, Your choices!
Chaos Moon : 1CC Edition$5.99
A classic style SHMUP in the tradition of 80's and 90's vertical scrolling shooters. Maximize your run and get to the top of the High-score Leaderboard. Can you achieve the rank of Fleet Admiral? It's a challenge. Visit our website for a free playable browser demo of the game.
Touhou Renkyouto ~ Subterranean Festival of Love and Jealousy$9.99
Touhou Renkyouto is a top-down bullet hell title starring the green-eyed Parsee Mizuhashi. Adventure from the Underworld to the surface and back again to solve an incident involving stray spirits causing chaos, and maybe help Parsee realize her love along the way.
Starship Scarwolf$3.99
Starship Scarwolf is a 2D top-down omnidirectional shooter. As I'm a fan of vector scan games, I aimed to create an expression using only wireframe rendering. However, I couldn't achieve this with just dots and lines, so I also used fill and circle drawing functions.
Hyperspace Dogfights$9.99
Hyperspace Dogfights is a juicy jet-combat roguelite in which you blast, dodge and slice your way through masses of technologically inferior baddies. Your jet evolves differently on each run and becomes stronger and weirder by gathering some of the 300+ available items.
Destructivator 2$5.99
A platform shooter that brings 90's gaming smashing into your face! Blast and insta-melee your way through hordes of alien soldiers, robots, bosses and loads more. Fight on foot, in a fighter or in a bomber. Take on bosses and ensure that the alien menace won't threaten Earth ever again!
Meteor Storm$4.99
Welcome back to 1996! This shared screen space shooter is the perfect 4-player competitive game for some casual fun!
misaligned$0.99
Classic 80s inspired shooter
LUFTRAUSERS$9.99
The skies will be set aflame and the seas will overflow with wreckage in Vlambeer’s stylish arcade shooter LUFTRAUSERS! Select from over 125 combinations of weapons, bodies, and propulsion systems and take to the skies to battle enemy fighter planes, battleships, submarines, and rival aces for glory, honor, and high scores.
Totally ShmupFREE
Beginner friendly 2D vertical and horizontal retro-style little shoot 'em up. Colourful stages with sound and vision inspired by the golden age of video gaming. Totally free introduction to the world of Shmups and Bullet Hell Games!
Sophstar$9.99
A vertical arcade shoot'em up with an inventive teleport system, lots of fast-blazing action and explosions, tons of boss fights, a risk/reward based score system and a proper challenge for both veteran and new players of the genre.
Void Gore$4.99
Void Gore casts you as an ace pilot descending through the levels of hell and getting rich in the process.
HORIZON VANGUARD$14.99
Blast your hovercycle through the enemy's crushing forces under a bright blue sky! Dodge enemy fire, attack huge mechanical targets, and score critical pistol hits in this new style of forward-scrolling arcade action. This is VR Arcade Shooting.
Commando Dog$0.99
Commando Dog - isometric, colorful action, with a top view. With modern graphics, and excellent music from rock artists.
Liquid Space Dimension$0.99
Fly and fight through the vibrant universe of Liquid Space Dimension in this retro-inspired action shooter! As Sid Seaburn, pilot of the Star Drifter, master a wide range mechanics like drifting, laser beams, and torpedoes to get the highest score possible and stop the evil general Ra-Baba!
Anceder$12.99
Dive in the VR arcade shoot-them-up (shmup, shoot'em up, bullet hell). A lot of action is awaiting you. "Insert coin" and jump in the shmup !
Ultra Imposer$3.99
Pilot the Ultra Imposer drone and eradicate the enemy army with your blasters or lock-on to multiple enemy targets and unleash a barrage of seeker missile destruction. Ultra Imposer is a third-person VR-only shooter action game on rails with unique gameplay and boss battles!
Escape from Terror City$9.99
3D Run'n'Gun Arcade-Style Action! Fight the Mechanized Forces of the Argus Empire and Escape from Terror City!
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.
Mirage Feathers$4.99
「Maybe one day, I won't have to fight when I fly.」
Brick Blaster$3.99
Gather your weapons and blast your way through the bricks in this new twist to the classic brick breaking genre. Test your dexterity and aim as you wreak havoc on waves of defenseless bricks.
Rocket Wars$0.99
Fast-paced local multi-player game packed with action. Destroy your friends with all sorts of different weapons and power-ups across multiple game modes!
Rebound Raver$0.99
Rebound Raver is a Brick Breaker style game from Retro Twist Games combining elements from the classic Break Out / Arkanoid games with a Pinball twist. Includes banging rave tracks from DJ Yan and audio light/visual FX for that rave club feel.
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?
Steel Alcimus$0.99
Steel Alcimus is a top-down helicopter shooter. Complete various tasks with your ally aircraft; such as saving the carrier, taking down the buildings, carrying objects, etc.
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.
Terra Flame$14.99
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.
Bad Chicken$9.99
Bad Chicken is a retro styled sideway scrolling shoot-em-up inspired by the retro classics. It takes place in 8 locations in the Ferus system, each one with different challenges, and dangers.
DEVIL BLADE REBOOT$15.99
An immersive pseudo-3D shoot 'em up experience that pushes the limits of pixel art. Push your score higher with the innovative Berserk System: the closer they are, the more points you get!
Star Saviors$1.99
Saviors brings the best bullet hell experience you can find on Steam. Play through 18 challenging stages in this ultimate test of tactics and reflexes.
OVERWHELMED$4.99
Enter the neon world of OVERWHELMED! Fight waves of enemies, using shooting and dashing skills to evade fire. Trigger your special Overdrive ability to defeat enemies more easily. Unlock characters, each with unique abilities and varied arsenal, to discover new gameplay styles.
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.
Jet Lancer$14.99
Jet Lancer is a high-velocity aerial combat shooter where you duel enemy aviators, hunt giant robots, and defy death at supersonic speeds as you evolve from an unknown rookie aviator into a once-in-a-generation ACE pilot.
Super Mega Space Blaster Special Turbo$4.99
The definitive 'Turbo Edition' of the easy to play hard to master space blaster. Bringing more game modes, ships, challenges, upgradable power-ups and frantic retro space blasting fun than ever before. Alone or in co-op you’ll keep coming back to unlock ships, upgrade weapons and beat your high-score.
Jamestown$9.99
Jamestown: Legend Of The Lost Colony is a neo-classical top-down shooter for up to 4 players, set on 17th-century British Colonial Mars. It features all the intensity, depth, and lovingly handcrafted pixels of a classic arcade shooter, with a modern twist: deeply-integrated cooperative gameplay.
Really Big Sky$4.99
A super fast, twin analogue shooter for the modern age!
Ikaruga$9.99
Shoot! Dodge! and... Get Hit!? "Ikaruga" is a vertical shoot 'em up that features an unique polarity-switching gameplay. Switch the ship's polarity and "get hit and absorb" enemy bullets! Achieve High Score with the chain bonus!
Jets'n'Guns Gold$7.99
Jets'n'Guns is a heavy piece of ground shaking rock blasting action with graphics and special effects that will blow you eyes out! Enjoy yourself in almost-insane action adventure of saving the universe from the deadly threat of more than 270 unique monsters in the campaign of 43 levels.
PARTICLE MACE$4.99
A space game about swinging trash into things and dying.
Galactic Missile Defense$1.99
Galactic Missile Defense is a shooter and tower defense game, where you must protect Earth from the invading Martians that declared war on our planet just because a space rover accidentally ruined their picnic!
WOLFLAME$5.99
Brought to you by the makers of GIGANTIC ARMY, Supercharged Robot VULKAISER, and SATAZIUS, WOLFLAME is a return to the form of glorious 2D vertical vertical shooters like Raiden, Raptor, and Twin Cobra.
Infinity Wings - Scout & Grunt$1.99
Infinity Wings - Scout & Grunt Take control of your chosen fighter (either Scout or Grunt) in this side scrolling shooter.
Return Home$4.99
Return Home is an abstract horizontal shooter with dynamic levels and metaphorical explosions. The game is randomised and altered according to how well you play.
Let Them Come$7.99
Let Them Come is a fast paced pixel art shoot ‘em up. Twitchy trigger fingers and focused battle tactics are the order of the day as wave after wave of alien-like creatures try to take you down.
Solaroids$9.99
Classic Asteroids® updated with modern gameplay and perfected controls. Explore hazardous environments and sneak around asteroids to surprise attack giant bosses. Upgrade your ship to use additional power-ups. Single player or fight with up to 3 friends with intense local coop.
Void Source$4.99
Classic multi-directional (360°) shoot 'em up. Navigate your UFO through hazardous environments with dangerous enemies and beat huge bosses!
Invasion$2.99
In a few words Invasion is fast and furious game. Inspired by Galaxian, this game builds upon the great mechanic with new features and sleek modern performance. Just fight without hesitation. Who hesitates will die!
Asteroids Millennium$7.99
A modern spin on an old classic! Asteroids Millennium provides exciting new game play without departing from the feel of its predecessors. Collect power-ups, dodge threats, and blast away at asteroids and enemies alike in this survival game that is truly fun to play.