Top similar games like Star Knight: Order of the Vortex:

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.

Kuiper belt survivor is an arcade style bullet heaven, where every run is endless. It brings a unique spin to the bullet heaven genre by making every part of the players weapon arsenal customizable with well over 10,000 unique weapons to build, and unique stats for every enemy.

Cards and Guns is a top-down arena shooter roguelite, where you’ll have to defeat hordes of creatures. Choose from a variety of cards and upgrades to create unique builds and survive to the end.

Defend against the alien invasion and take down the mother ship! Utilise branching upgrade trees, unlock new ships, and equip permanent upgrades to create your own unique build and defeat the growing hordes of invaders in this sci-fi action roguelike!

STDB! is a rogue-like game about hardcore mercenaries and space marines escaping from a very cozy planet filled with monsters, nuclear fire, viruses and pixelated violence.

Revolocity is a casual 2D physics based roguelite in which you use your momentum to tear through hordes of enemies. Try to survive as long as possible, and get your score as high as possible. Run mutators and upgradeable abilities change the way each game plays.

Fight against an army of elemental creatures hell bent on your destruction. Compete with other players on the leaderboards to show who is the master of Repetendium !

Fight to survive in this intense twin-stick shooter! Hold off against increasingly dangerous waves of enemies by equipping yourself with items, sentries, and drones. Piece together ridiculously powerful builds by finding creative item synergies and unleash hell to defend the outpost at all costs!

Roguelike bullet hell shooter, where you fend off waves of attacking monsters in a constantly transforming arena. You are rewarded with upgrades to your vulnerable spaceship if you survive long enough.

Beat up planets in Asterogues, a cosmic bullet hell shoot-em-up hybrid! Pick your character from a band of outcasts banished to the Asteroid Belt, dodge and shoot your way through a brutal onslaught of bullets, and take revenge against the Solar System!

GUNFIELD - A game with high-quality pixel graphics that combines the genres of shoot 'em up, roguelite, and bullet heaven. Destroy hordes of alien ships and gigantic bosses in thrilling battles, unlock and upgrade new weapons and abilities.

Prepare for an interstellar showdown like no other in a gripping roguelike top-down twin-stick shooter set in the vast depths of space. Pilot your advanced starship, engaging in relentless battles against hordes of alien adversaries. Destroy, Collect, Upgrade, Die, Unlock, Repeat.

Witch Guild Survivor is a fun horde roguelite game where you play as a witch that must survive from the monsters using your poweful spells! Collect white orbs and upgrade your magic spells. Choose a combination of various elements to generate synergies between them in each run

A micro horde-survival roguelike where time only moves when you do! Level up, choose your skills and slaughter thousands of monsters. Jump in the monster-slaying arena and piece together your collection of gear, characters, and stages to become the ultimate survivor!

Prepare for an interstellar showdown like no other in a gripping roguelike top-down twin-stick shooter set in the vast depths of space. Pilot your advanced starship, engaging in relentless battles against hordes of alien adversaries. Destroy, Collect, Upgrade, Die, Unlock, Repeat.

Use ships to attack and destroy enemy space stations in real time.  Navigate through different randomly setup star maps to get to the exit and win.  It's a 2D single player space game that's massively replayable.

Cosmic Cursor fuses simple mouse-based controls with a challenging, reactive bullet hell for the ultimate pick-up-and-play roguelike experience.

Cyberscape is a top down round based action game with some rougelike elements. Play as different heroes with unique abilities and fight against the evil robot army. Level up and complete achievements to unlock new items and fight your way through different locations.

Master aerial acrobatics and bend time to your will in this roguelite, where strategic depth meets intense acrobatic gameplay. Travel through time to unlock powerful synergies with upgrades that turn you into a godlike sky matador. Gear up, pilot—it's time to rule the skies.

PhaigeX is a fast-paced "Bullet Heaven" space shooter that tasks the player to contain a growing incursion of rogue AI-controlled units. Pilot a variety of ships, warp in the support craft, and use a myriad of upgrades to lay down heavy firepower against the growing menace.

Shoot alien invaders, upgrade your ship, level up your weapons and save planets to defend against the invasion. Choose your favorite between the different unlockable ships and buy perks between your runs to ensure victory. After you triumph, hunt for achievements and ascend to save more universes

Eyeb is an action packed tower defense-like that pits a young space cadet's bionic eyeball against a harrowing nano-bot invasion. Push out, explore, power up and drop a trillion towers for the glory of facing off with the diabolical Nano-Lord. You can also go fishing in space.

Crash Override is a randomly generated action shooter with roguelike mechanics. Surf the cybernet as a hacker for hire trying to save the cybernet from a mysterious threat. Power up before the crash wave erases everything. Gain reputation, secure contracts, salvage data, upgrade, and survive.

Skycliffs is an action shooter roguelike dungeon crawler with fast-paced top-down platforming. Jump and dash across sky islands, fight loads of monsters, and get upgrades to survive the many dangers of your journey. Will you be strong enough to reach and defeat the keeper of this floating world?

Beats of Betrayal is an adventure game with roguelike mechanics and rhythm-based combat. Explore dungeons, gain skills and grow stronger to defeat challenging bosses and unlock the secrets surrounding the 'Power of the Waves'!

Blast aliens, collect upgrades, and survive long enough to make it out in this sci-fi mashup of "Asteroid" and "Vampire Survivors".

GhostGame is the roguelike bullet hell game that puts your hand-mouse coordination to the test. Fight through hordes of enemies, gain powerful skills, acquire companions and defeat bosses to accomplish your ultimate mission.

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!

A twin stick shooter without the twin stick, Gunlocked is a sci-fi action roguelike about careful positioning and upgrade selection. Manage unique targeting systems across multiple weapons and upgrades, as you battle legions of alien ships, and then do it all over again!

Roguelike missile command. Survive as long as you can aboard the Ark, humanity's last hope, in a hostile galaxy.

Slay waves of spooky enemies for 20 nights to survive 'The Demonic Conveyor Belt'. Talented is an arcade roguelite with randomly generated skill trees. Choose your upgrades and abilities wisely and you might just make it out alive. Are you truly Talented?

KaveXplorer is a top-down bullet hell dungeon crawler following a group of Xplorers seeking for the universe crystal.

As one little god in a galaxy of many, you must lead your followers from their doomed planet to a new home, at each stage of your journey: an opportunity to build belief and improve your follower's vessel, to meet with other gods and their followers, and to discover why the Fates destine your end.

Mystic Labyrinth is a top-down 2D twin stick shooter rogue-lite game. Choose from multiple starting classes and use swords, spears, axes and magic to conquer the many themed floors of the labyrinth.

Crush, smash, and eat thousands of enemies showing humanity what the meaning of destruction is! Kaiju Catastrophe is an arcade game with roguelite mechanics. Mutate devastating weapons, unlock permanent evolutions, and wreak havoc with a variety of monsters to tear humanity apart!

Broadside Renegades combines auto-firing weapons with manual ship abilities in a rogue-like space pirate adventure. Choose your captain and upgrade your ship to steal the space kings booty. Warp ahead to stay alive, and mind your bearing.