Top similar games like Psion Protocol:

Sanctum Arcadia is a game where you must fight your way through increasingly dangerous zones filled with enemies, hazards, and mystery. Sanctum Arcadia has a unique but still familiar progression system, challenging and engaging combat, all in a smooth Arcade-like experience.

Astral Break is a fusion of mech and roguelite action. Customize your mech, from modular body parts to software configurations. Fight and evolve your mech throughout the battle. Terminated? Unlock more upgrades with battle data to refine and perfect your build!

You've escaped from the galaxy's most secure space prison, and now there's a bunch of angry lawless chasing you. You must survive, fight for your freedom, and outrun these grumpy pursuers. Asterobits delivers a relentless (and slightly absurd) escape in an arcade-style roguelike space shooter.

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.

Family-friendly roguelite adventure where you play as a talking car, battle through a vibrant sci-fi universe, and craft unique builds in a world shaped by ever-changing dimensions.

Summon an army of clouds in this roguelite bullet heaven survivors-like inspired by Korean folklore! Recruit and fuse cloud companions, befriend shrine visitors, and uncover the mystery of the moon goddess!

Progress through short levels to face enemies and final bosses to save your life. Win and you'll level up, fail and you'll level down. The whole galaxy depends on you!.

Rob o Bot is a survivors-like action game where you fight hordes of robots that began acting on their own after a mysterious virus infected a new generation of machines. Survive waves of enemies, upgrade your gear, and take back control before the machines take over.

Move and shoot to the beat to defeat the evil alien invaders in this retro-inspired arcade rythm game!

"Inception: source code" is a fun cyberpunk action game created with a new concept! The game is very difficult. The cute sister controlled by the player can rebound bullets and kill the enemy in the gorgeous light and shadow of the sword.

Defend your base on Mars from invaders in Residuum. A thrilling mix of tower defense and shooter gameplay, upgrade weapons and choose your crew for a unique experience each time. Play with a friend for even more excitement!

🩷 It's a Survivor. With horrible princesses and princes. ¡Save them all!. Unlock and upgrade 12 + weapons. Mess up with 40+ runes & find all the cursed objects. Then,  treat yourself with diferent yet disapointing winning scenes. You deserve owning this.

Flower Survivors is a hyper-casual action RPG where you team up with beautiful anime-style heroines to survive against endless waves of enemies.

SUPER SHAPESHOOTER is a fast-paced, top-down, stylized action game. Take on relentless waves of enemy shapes as you fight for survival. Save up your credits, make risky choices, and construct the perfect build to make your way through to the end and defeat the final boss.

Build wildly overpowered upgrade combinations while surviving handcrafted precision platforming challenges.

Travel across time to repair your broken Time Machine. Combine Traits, Skills, Modules, and Transformations to create your own unique build in this endlessly replayable 2D pixel action roguelite.

Bullet Hell or Heaven? A rogue-like where you upgrade yourself and your enemies. Strategize around your build choices and dominate the battlefields of Novi Blaster.

Hundreds of orcs want you dead! Master your sword, shield, bow, and teleportation to overcome relentless hordes. Find the Topworld Portal, restore it — and fight for your survival. Fail, and you will be lost forever!

’Save Me, My Hero’ is a defense game with roguelike elements.Complete your own battle style with the hero's various skills and special abilities.

Immerse yourself in an unknown galaxy. Collect resources, upgrade your spaceship and experience an exciting mix of action and adventure with intense battles in a calm atmosphere. Discover new worlds and master challenges on your epic journey through space.

Heal instead of harm in this wholesome Halloween bullet heaven! Play as 9 magical versions of Pooh, recruit a Ghost Army, collect Candy Corn, upgrade your abilities, and restore peace to the Hundred Acre Wood.

Multiverser is an action game with rouglike elements, in which you defeat hordes of enemies who precede clashes with bosses. After each skirmish you gain currency, which makes you develop your characters stronger. All this to save the multiverse and clean it from all sorts of monsters.

Collect stars and use them wisely to become stronger. Use each character's personality to establish a growth strategy. And survive and escape for 5 or 10 days.

Mobile and Shooting Players only need to move to play this game. Multiple ability choices Obtain different constructions through upgrades and item drops. Extra limited time capability By picking up limited time ability items, temporary ability bonuses can be obtained.

The Aqua Kitty cats have launched into space in an all new action RPG shoot-em-up adventure! Pick your crew, blast off to investigate mysterious water filled asteroids and watch out for marauding pirate rabbits!

Spaced Liberation is a very small indie game about the liberation of a planet.

You are a destructive piece of junk and your goal is to run over your enemies using all kind of weapons, abilities and upgrades

A futuristic action rail-shooter! Action packed, and full of quirky character dialogues, unique level designs, fully animated story cutscenes, and challenging boss battles!

Welcome to the Bugscraper. In this solo or co-op roguelike shooter, battle floor after floor of enemies, aim for the top and settle the score with your tyrannical boss.

Using the musket of Captain Davy Jones, you’ll need to kill as many enemy pirates as possible in order to achieve a high score and earn your title as Pirate Lord of the Seven Seas. Be careful though. Your enemies will grow angrier the more you attack them. Be sure to drink more rum and get stronger.

Smashteroids is a neon arcade shooter-roguelite. Blast and dodge relentless swarms of glowing enemies, cash your kills in a shop between waves, and stack absurd upgrades across 20+ unique ships. Push each run deeper through hazard-strewn planets until a screen-filling boss stands in your way.

Slice, dice and blow up thousands of enemy ships! Spaceborne Survivors is a sci-fi casual game with rogue-lite elements, where your choices can allow you to become a mecha menace against huge enemy fleets invading your space system.

Dodge, collect, and survive. Every piece of salvage you grab makes your ship deadlier and tougher.

Between bullet hell, black markets, and star-map strategy, chart a branching route of your own. Combine Scatter, Missile, Homing, and Laser weapons with 100+ items and 30+ random events—each sortie reshapes your build. Balance risk and reward in unknown systems and blaze your trail through the void.

Race through caverns while blasting away enemies and terrain to reach the depths of Mars in this reimagining of the 1981 classic.

Fight cancer as the last leukocyte in a survivors-like action roguelite. Build your loadout with manual and automatic weapons, perks, and items while surviving in a living ecosystem that reacts to your presence and feeds on the remains of the dead.