Top similar games like ExtraGalactica:

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.

Explore and uncover the mystery of this enormous spaceship by shooting alien creatures in this Sci-Fi Action/Adventure Metroidvania.

Defender's Squad is a sci-fi vertical scrolling shooter 2D that combines 7 different levels. Play Solo and pick one of the 3 ships to kill enemies and save the earth from aliens.

Enjoy this 2D metroidvania-like bullet hell platformer. Jump, dodge and traverse using your jet pack. Find weapons and abilities. Fight bosses and escape an old space station drifting through the cosmos. You are alone, with nothing but a space suit and a gun. Just keep going! Persevere and triumph!

Grab the fate of all life in your hands. Blast your way through the cosmos, destroying monstrous cosmic beasts and the space cultists summoning them, on your path to stopping your mother from unleashing the chaos realm upon the universe, in this sci-fi cosmic horror bullet-hell, STARR RINGER.

Brave Soldier: Invasion Of Cyborgs is a pixel art platform game with a lot of action. Help the soldier save the world from the Cyborg Invasion! Good Luck!

The humanity succumbed against the power of a aliens intergalactic empire, but managed to organize and establish a resistance army. Join the rebellious seekers of peace and help them defeat the evil that haunts the Earth.

Top-down shooter action for the Atari Lynx handheld console. WANTED: Hot gun for hire. Travel to several exotic and dangerous places. Discover several exotic and dangerous aliens and kill them. Kill lots. For cash. Buy more weapons and kill again.

In the vast depths of space, lies a man with a dark past. Setting himself apart from that old life, and seeking justice against wrongdoing instead of being the cause of it, Captain Righteous uses the Freedom Fighter, his trusty space fighter to search for and combat the evil Captain Buster!

Play as Captain Grisham, and uncover the secrets of Planet 4-514 in this thrilling prequel to Side Scape!

Astrotester is an action-adventure game. Complete tasks across various locations and levels. Fight against the dominant forces of the Flow and hostile creatures. Learn more about the world of Stellar system.

Experience the thrill of a shmup game like the arcade classics. With just the right amount of story, lots of action, and many, many bullets.

Survive 10 enemy stages! Shoot 'Em Up style, spaceship game, in pixel art and 8-bit retro music! Evolve your shot to the maximum level, use the energy bar for upgrades, and special abilities! Advance each stage by defeating Bosses and enemies to collect new skills, transformations and extra lives!

Void Prison is a fast paced, endless arcade twin stick shooter that puts you inside of an ever shrinking ring. Survive by fighting emerging enemies around you and don't get consumed by the void. Complete achievements to unlock new skins and powerups and get on top of the leaderboards!

WE HAVE ALIENS, YOU DON'T—Blast Martian invaders and flying saucers across 30 stages with robotic voice effects. Use your destructible shield, rescue army men for bonus points, and chase the high score.

Alpha Force Zero is an intense top-down bullet-hell adventure that requires skill and planning. Utilize multiple weapon systems including an Auto-Turret with adjustable firing modes and unlock upgrades that you can equip in your ship to give you the upper hand. Dodge, fight, survive!

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.

A top down shooter where you heal by getting near bullets, Little Blue allows you and 3 friends to bring Technitia down using nothing but their own technology and hubris.

Nebular Crush is 2D retro shooter that delivers non-stop arcade action. Armed with a magical surfboard and guitar, you must shred your way to victory through over 50 action-packed levels.

Destroy enemies, bosses and everything you see ahead!! Get crystals to buy better starships and get stronger. Have fun in three different game modes.

1CC Games’ first shoot ’em up returns with totally overhauled visuals, all-new enemies and attacks, a deeper scoring system, remixed soundtrack and fresh player powers. Space Moth: Lunar Edition is the ultimate version of the beloved cult classic.

Jetboy is a retro supercharged jetpacking pixel shooter with a pumping metal soundtrack.

Galactic Explorers is a top-down 2D retro space shooter inspired by early games such as Galaxian, and Asteroids.

A sci-fi shoot'em'up game with heavy focus on upgrades experimentation, featuring two unlikely heroes that must work perfectly together, despite their share of secrets, to surpass their limits and succeed in eliminating a threat that might destroy both Earth and Andraxia if left unchecked.

You do not know anything, yet you have to move forward. Wander through the corridors of a mysterious factory and recover your abilities. Fight patroling drones and break through to demanding boss battles. Seek a way out and find the meaning of the game's title.

Originally developed as a birthday gift for my nephew, Jackroid is a heartfelt indie game that blends classic action-platforming with Metroid-style exploration. After several requests and growing interest, I’ve decided to bring Jackroid to Steam. Free—as a thank you to everyone who’s supported me.

Remake to 2016's Legends of the Universe - StarCore, a Metroidvania style Action-Platformer with several abilities, enemies and areas to explore.

Stop the Saturnians is a shooter inspired by classic arcade games. Dodge enemy fire, destroy procedurally generated alien waves and fight massive bosses. Collect resources in the midst of combat to upgrade your ship or improve Earth's defenses. Protect yourself and the planet both!

Distant Space 2 - is an indirect continuation of the first part, in which you will find more dynamic gameplay. Your task is to destroy enemy ships on each level to go to the next of 26 available. In addition to conventional ships, you will have to wait for the boss ships, the battle with which will not be easy.

Little Red Rocket Ship is a bullet hell game with shoot-'em-up and platforming sections, featuring challenging but short levels and multiple weapon and ship options.

BOOOOST!!!! is a skill-based, sci-fi themed action platformer with some narrative driven elements and some minor puzzle elements.

Blast your way through enemy territory and level up your versatile arsenal of high-tech weapons in this handheld game style retro shmup!

"Remote Life 2" is a sci-fi an action packed platformer. Combat against scary aliens and escape from the monster Hive. After the success of the first "Remote Life", now you can enjoy even more of the crazy weapons, cool vehicles and outstanding and unique art.

ZPF is a retro-inspired horizontal shooter originally designed for the Sega Genesis/Mega Drive. Blast your way through a cosmic gauntlet of epic boss battles, addictive scoring, and hidden secrets in a thrilling arcade-style adventure through fantasy, sci-fi, and alien-themed worlds.

The loneliest journey in a universe destroyed by a virus. Go where you can go to find what you can find. Solve puzzles, navigate mazes, and prepare for the final battle with the last functioning bio-ship in the universe.