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!

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.

Summon an army of clouds in this auto-battler survivors-like bullet heaven inspired by Korean folklore! Recruit cloud companions, collect relics, befriend shrine visitors, and survive against the monster hordes!

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!.

Assemble a limitless arsenal in this survive-em-up roguelite shooter. As a Gun Manufacturer's testing force, your mission is simple: test the latest gun tech and scavenge alien planets. Collect insane weapon parts to invent crazy guns that slay thousands. You may not survive, but your guns will!

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.

Invasion Survivors is a fast-paced bullet heaven and bullet hell arena shooter with roguelike elements. Explore a colorful and chaotic world where survival depends on your skills, quick reflexes, and every choice you make.

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.

’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.

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.

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.

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.

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

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!

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.

Welcome to the bugscraper. Rise to the top of this pest-filled tower in this roguelike shooter and battle waves of enemies at every floor on your way to your boss's office.

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.

The spirit of the 80s shapes the entire world: magic and technology collide in a post-futuristic 2087! An action 2D game with rogue-lite inspired mechanics. Two characters two combat styles: Elly, a melee fighter. Johnny, a gunslinger. Fight your way through, get the keys and unlock new rooms!

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.

An Arcade game where you fire coins at evil statues that hurt you if they fall off the bottom of the board. Complete Challenges, unlock classes, perks, and equipment for your next attempts. Earn Gems & Coins in runs to buy permanent upgrades and unlocks. Can you survive 'til the end?

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

Overrun Survivors is a fast-paced action roguelite game that throws players into the middle of hordes of aliens and asks them to fight tooth and nail in order to survive. Play through different alien planets and feel powerful knowing that you're the only one who can save the day!

It's time to become ridiculously powerful in an arcade roguelite RPG with no limits on your power! Guide your hero through infinite retro fantasy worlds, get loot, gain upgrades, and keep growing their power as you rip through hordes of enemies in the ultimate power fantasy!

Combine abilites to create infinite possibilities of spells and decimate thousands of enemies. King Krieg is a top-down arena roguelite where YOU are the KING and you buy mystical items, find powerful guns, and craft new spells

Rogue Run is a frantic action roguelite and arcade. Escape space cops while delivering valuable cargo across dangerous planetary systems. Pick your pilot, combine countless items your way, and don’t die. Will you smuggle with the rebels or join the space junkyard?

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!

DAR is an arcade-style single-screen shoot-em-up inspired by the classics, with some modern rogue-like twists! Pick your character, plot a course through the galaxy, grab upgrades and destroy the enemy! The ultimate goal? Saving the galaxy! Or just getting a really, really high score - your call.

"3D Survivors" is a flashy and vibrant casual game. Take down the approaching monsters from all directions with high firepower. Obtain various power-up items to prepare for the final boss. Use the acquired score to upgrade the characters.