Top similar games like Solitarius:
Solitarius FREE
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.
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Ace Pilot Pacific$9.99
Dive into ‘Ace Pilot Pacific,’ an arcade-style air combat game set in the WW2 Pacific theater. Pilot one of six distinct aircrafts through combat-intensive maps, engaging enemy fighters in high-speed dogfights. With your wingmen, rise as an Ace.

Epic Pandemonium$5.99
Epic Pandemonium is a classic run-and-gun action game with a strong focus on boss battles. Inspired by the 16-bit Contra saga.

KillmaidenFREE
A fast paced singleplayer arena shooter. Choose one of three goals to win each stage, try different maidens and defeat 10 bosses on the way to meet the devil on stage 66. What's the highest score you can reach?

Boney's Research On Humans!$5.99
Boney is an aspiring journalist looking for the next big scoop when he gets a tip about a secret lab operation he ends up going to the biggest scoop of his undead life! Now he has to return to Monsternett and share his findings with the undead world!

Battle Star Asteroids$0.99
You have a very important mission. Be a hero who saved humanity from extinction. Fight intense battles, use all your skills and destroy all the threats that are coming to our planet. Remember, we don't know exactly what we are dealing with, be careful. You are our hope.

Lil Tanks$4.99
A side-scrolling shooter with RPG elements that puts you in control of a prototype tank -- defending humanity from the alien scourge known as The Cuur!

SpaceBase Power-天基火力$4.99
Space-based Fire is a science-fiction bullet-screen shooting game that tells the story of humans battling mysterious mechs. The game provides construction, tower defense, barrage shooting in one game experience.

Hellsinker.$9.99
A legendary SHMUP influential to the best makers in the genre, Hellsinker is now available on steam in its most advanced form! Gameplay, story, graphics, and even music all united into one cohesive and highly dimensional Shoot-em-up!

Robonauts$3.99
Shoot through storms of weird and funny creatures, jump between planets by switching gravity, and relive the childhood fun of your very first arcade shooters - alone or with a friend in co-op!

Star Mine$5.58
Star Mine is a 3D first person perspective space shoot 'em up. Awesome old school action! The old federation is dying, poor and desperate. Deep outside the boundaries of known space, alien mines are protected. But not from you. Take cargo, blast star jewel's from asteroids, steal energy and flight.

Super Trunko Go$8.99
Super Trunko Go is a challenging top down shooter that takes place in a thrilling space world. Navigate our hero Super Trunko, and help him restore peace back to the planet!

Cyberscape$4.99
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Virus Kombat$0.99
A deadly virus is decimating the world's population and you are the only one who can stop this threat. Run around the scene collecting the necessary ingredients to produce the vaccine, after that, eliminate the virus and save the population, can you do it?

Space Dragon$14.99
Take control of a pair of hatchling space dragons and blast your way through the cosmos with our innovative move-and-warp system. Fight the robotic armadas that have enslaved the massive beasts of the galaxy! Destroy suns, battle epic bosses, and leap to new systems through mind-bending wormholes!

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Two-dimensional game in New York. You must play as a secret agent so that he can gain immortality.

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.

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.

1993 Space Machine$11.99
Space shooters never die. 1993 is a testament to that. 1993 is a classic shoot em up celebrating games like Gradius, R-Type and Life Force.

Stick Adventures: Wizard Madness: Chapter 1$1.1
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SSS222: HyperSpace$2.99
A fast-paced addicting space shooter with an inspiration taken from many modern games. A project I have been passionately working solo for 2 years+!

Gape Kape Escape$3.99
We knew they would come to us one day. We had been observing the development of human technology for a long time. We feared this wild civilization. Now, You must reclaim the artifact they stole from us.

Blazing Trail$12.99
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PlanetDrop - A Tiny Space AdventureFREE
PlanetDrop - A Tiny Space Adventure is a computer game where you command a spaceship in an orbit of a planet. Your primary task is to capture "drop zones" with your shuttles and commandos. You rely on stealth, agility and speed, rather than on firepower.

Asteroids: Multiplayer$2.99
A modern version of the classic arcade game

Wasp Wars 2$1.99
A run n' gun FULL ON ACTION 2d shooter. Pretty difficult, lots of explosions.

Atria Valkyrie$9.99
Operate disc hovercrafts that absorb enemy bullets to charge up your weapon. This is a vertical STG game. Correct timing of your attack and choice of bullet determines your survival or defeat.

Robot-X$9.99
A fast-paced platform shooter inspired by 90s classics. Follow Robot-X on a journey to protect the city from a new danger, fight bosses and jump over pits in this retro experience.

Planet Lander$0.99
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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.

RoboHuntersFREE
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SoulBoundFREE
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Invaders from the Third Dimension$0.99
A retro space shooter with a twist - now you can rotate your ship and aim diagonally at enemies, adding a whole new dimension to the shoot 'em up genre.

Super Smash Asteroids$4.99
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Stimuli$4.99
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Hoboman$1.99
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Elec DudeFREE
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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!

Shibui Coliseum$2.99
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Vostok 2061$9.99
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Farm Invaders$4.99
Top down stealth based puzzle game about an alien stealing cows from a farm. Use futuristic gadgets and stay in the shadows to avoid detection. Get all golds in every level to appease the queen and bring honor to your colony!

Pogo Rocket$9.99
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Christmas Blaster$2.99
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Profanity Police$0.99
90s inspired 2D platformer with robots that cuss at you if you jump on their face.