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. Experience thrilling "thrust" controls that propel you through dynamic dungeons. Collect diverse modular armors to refine your combat style and experiment with endless synergies to craft your ultimate hero!

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.

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!.

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!

"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.

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

’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.

"Infinity War Land" is a pixel-style Roguelite game that combines exciting shooting gameplay, strategic weapon upgrades and dungeon exploration elements.

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.

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.

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

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

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.

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!

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 neon-soaked chaos of PixelPop 2087 will guide you in a 2D pixel art adventure where '80s nostalgia meets a dystopian twist from the future! Set in the retro-futuristic year 2087, this indie combines synthwave vibes, explosive action, and quirky storytelling to deliver a cool gaming experience.

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.

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

"Drift Survivor 2" is a thrilling Roguelite vehicular combat game where you unleash bullets amidst chaotic drifts and high-speed chases. In each unpredictable battle, you must also manage energy consumption,choose different weapons, upgrade your vehicle, and ultimately defeat the powerful AI legion!

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!

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

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.

"Guardians Of Restoration" is a top-down robot action game that combines action and bullet hell elements. Level up within a set time to enjoy thrilling battles against various bosses. Each boss randomly possesses one of three traits, ensuring a unique and exciting experience every time you play.

1000 Seconds is a roguelike – Defeat enemies, gather resources, and upgrade your orb to escape the temporal limbo, but you only have 1000 seconds to reach the end, so be as fast as possible.

"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.

Unleash bolts, set traps, and bash through relentless hordes of minions to protect a little girl from Hera’s wrath in this rogue-lite shooter.

Welcome to Slime 3K, an unhinged roguelite bullet-heaven set in the Despot’s Game universe! Build a deck of crazy weapons, grow stronger and devour hordes of pink puny humans as a murderous jelly blob on a warpath of death, violence and pretzels.

Isometric Mech Action RPG Survival game. Customize your mech. Unlock new parts and ultimate weapon evolutions. Create endless builds with the unique RPG stat system. And much more!

Shoot through storms of weird and funny creatures, jump between planets by switching gravity, and relive the childhood fun of your very first arcade shooters - alone or with a friend in co-op!

Sausage vs. Vegetable is a run-based roguelike with bullet heaven elements, following a band of outcast sausages to level up, loot, and fight their way to uncover the truths behind the vegetable invasion.

A strategic yet fast-paced arcade-styled shooter with roguelike elements! Arcade game difficulty, randomly generated runs, fantastic voice acting, colorful characters, and a simple yet unique upgrade system!