Top similar games like Slordax: The Unknown Enemy:

This is a retro space shooting game, where you only fight against the strongest enemy. There are 15 unique bosses in the game, and players need to use different weapons and strategies to defeat them. Dedicated to you who are both challengers and retro game lovers.

Dwarf Star: 16 bit inspired game where mercenary go shoot shoot on evil alien guys who were accidentally fabricated by the government. Top down space shooter with a mission based structure. However, you can do these missions in plenty of different orders with different amounts of upgrades.

Blast through waves of alien enemies in Project AionIX! Master your piloting skills, dodge, and survive in this fast-paced space shooter!

Kill it. Take its gun. Rinse and repeat. WARNING: You will die. A lot. Probably. This 2D Retro shooter is about as hard as it can get, but repetition and good luck will cut though everything like warm cheese. This game grows with the community, and more bosses will challenge you in the future.

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.

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.

Space Ace is a 2D top-down shooter that focuses on upgrading your ship to fight through levels of Bosses and smaller enemies. Play with keyboard + mouse or Xbox controller.

Super Real Darwin is a fast-paced, vertical scrolling shoot-em-up that rewards skill and persistence – a cult classic for the retro shmup fan. Take control of a fighter ship capable of mutating into different shapes as it evolves while fighting off enemy invaders.

Star Jet Alpha is a top-down space shooter inspired by classic arcade games. Progress through each stage by blowing up enemy space stations while avoiding or destroying enemy missiles, space mines and asteroids. Unlock Star Jet capabilities by completing stages.

Stellar Space is a new take on a classic arcade game with a modern, rogue-like, form for new players to enjoy!

Join Captain Rijk as he attempts to escape from the clutches of one of the most villainous species in the galaxy. Help to uncover the horrors that are being carried out on the fringes of the civilised galaxy and become the divine being prophesised to inspire an uprising and destroy The Domain.

Dodge and shoot your way through waves of enemies. REVO is a high speed, neon drenched space shoot ‘em up inspired by arcade classics of the 1980’s. Collect pickups, unlock powerful, ammo hungry weapons, and defeat giant bosses.

Take control of a spaceship in this top-down action shooter and defend yourself and earth from the unknown mysteries and horrors off space!

A top down, twin stick shooter inspired by classic retro arcade games with loads of enemies, fast paced bullet hell combat, big boss battles and tons of bullets.

You've been dropped into enemy space. Weave your Starfighter between alien spaceships, lasers, asteroids and bombs destroying as many as you can and collecting valuable coins and powerups as you go.

Fast Paced, Bullet Hell Retro Shooter! Shoot down enemies and dodge everything. Fight through 17 intense levels with 6 insane boss fights. Do you have what it takes to beat the game?

"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.

High-speed shmup where survival meets rhythm. Evade waves of enemies to pounding drum and bass soundtrack. Compete globally or battle friends in co-op/PvP. Customize your ship, perfect your run, and claim your spot on the leaderboards.

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.

Ever played a difficult shmup wishing for just one more bomb? Blast to your heart’s content in Blast Rush LS, a fresh explosive experience with infinite bombs, other powerful abilities, and extra challenges that demand more than just big booms. Escaping an exploding mothership isn't easy, after all!

Rocket Rats is a survivors-like game where you defeat cheese-based astral bodies in space – as a rat! Clear waves of enemies, collect cheese, upgrade your gear, and conquer the moon!

2D space shooter and turret defense come together to create the Planetary Defense System this world needs! Shoot down asteroids and aliens and survive the bosses in this arcade like game featuring customizable satellites, projectiles, and upgradable Cannon and Planet Shield systems.

Battle a never ending swarm of enemies, but be sure to surrender before you die...

In this highly addictive top-down arcade shoot-em-up from 1982, originally for the ZX Spectrum, defend yourself from wave upon wave of deadly alien combatants using your Ion Thrust Drive and dual Plasma Disruptors.

Collection of a few arcade classics, remade with a fresh and friendly looking art style and a beautiful soundtrack.

A retro space shoot 'em up with pixel art graphics, unique enemies, tough angry bosses, and a killer soundtrack. You are among the first pilots to arrive in the system to mount the counteroffensive against the aggressors. Get out there and show these aliens the price for messing with The Alliance!

Nebula Cleanup Crew is a top down action shooter with a focus on hot and cold weaponry. Blast enemies and bosses away in multiple regions with super heated and chilled weapons — freeze foes, overheat them, and unleash powerful thermal special attacks to rescue your crew!

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

Gratuitous Shooty Game is a hobby space shooter made by the developer of Gratuitous Space Battles, reusing the art from that game :D.

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!

Become an agent of vengeance in this bullet-heaven action roguelite! You are the lone survivor of your squad, on an alien planet with just your weapon, a jetpack, and the courage to keep fighting. Kill off alien swarms and transform their valuable guts into explosive upgrades and vital utilities.

Ranphon is a side-scrolling space shooter where you control a small ship called Phon in a vast and frantic space full of hostile spaceships.

A difficult top-down shooter with 4 bosses (featuring Big Jean). Each boss will try to stop you with their unique abilities. Despite this, you are still gunning for Jean.

A【Pixel style, rouge、type horizontal、 shooting、 defense 】 game

Pilot your space vessel in this action-packed space shooter. Defend your station using various weapons, power-ups, and turrets. Balance fast-paced dogfighting with smart fortification as you face waves of enemies in this arcade blend of quick combat and thoughtful planning.