Top similar games like Psion Protocol:

Realm Survivors is a fantasy rogue-lite adventure! Battle waves of enemies, gain XP, unlock powerful abilities, and defeat epic bosses. Progress to become stronger, more powerful, and godlike. Discover new characters with unique skills. Conquer all to become the ultimate hero of the realm!

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.

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.

SVSV is a bullet heaven roguelite following a band of outcast sausages to level up, loot, and fight their way to uncover the truths behind the vegetable invasion.

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.

Choose your character and face thousands of monsters as you fight with various weapons, in this casual game with roguelite elements, your choices will change the future and the present!

A cozy time survival roguelite in space. You steer the shippy while the shooting happens automatically. Meet cute NPCs, solve small quests, and fight quirky enemies with satisfying weapons. A shorter experience for people who don't have much time but love playing (and finishing) games.

Robot Arena Survivors is a single-player arena auto-shooter. You are piloting one of your own Hovercraft Units to fight against many waves of deadly robots. Unlock powerful abilities and rewards to get the job done.

Deep Space Scoundrel is a rogue-like space adventure where you use a variety of classic arcade mechanics to explore the universe, customize your ship, land at spaceports, and fraternize with other aliens and low-lives.

Deadlocked: an adrenaline-packed Cartoon top-down shooter. Customize your loadout with unique weapons, unlock fun little pets, and upgrade your character. Master responsive gameplay and become a cutesy robot killing machine, There's one rule, Defy Deadlock

Survive the relentless swarm in this arcade take on the Bullet Heaven'/Survivors-like Action Roguelite. Slay 1000s of foes, level up, loot chests and make your character more powerful than ever. Unlock perma-upgrades and more heroes, so you can even the odds on future runs.

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.

Welcome to the bugscraper. Rise to the top of this pest-filled tower in this 2D shooter platformer and battle waves of enemies at every floor as they come for your skin (or rather, exoskeleton).

Action roguelike where you build and command your own spaceships. Battle enemies, explore planets and customize your ship on the fly. Make the best use of the quirky ship modules you find, ranging from slingshots to ion cannons, to try and avoid certain death.

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!

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

Step into the shoes of a young individual trapped in a temporal limbo. You have a living orb that assists you, but you only have "1000 seconds" to escape a literal race against time.

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.

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

Come and fight with Doobi to slay the evil monsters and bring peace to the family! Watch out, as only your strategies and upgrades will help you find the right set of combos. Let's venture deeper into the woods!

Ready for a blend of RPG and Tower Defense in a 2D rogue-lite game? Enter The Arena Pit! Choose your hero, wield powerful weapons and skills. Strategize your moves in the arena, setting traps, obstacles, and towers against hordes of monsters in the epic battle of good versus evil!

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

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!

Top-down robot action game combining action and bullet hell.

Endless Firepower puts you behind the trigger of millions of procedurally generated weapons and gives you a reason to use them in this fast-paced action roguelike where everything is generated and you'll never know what or where you'll be fighting next.

an action-packed arcade shooter that takes you deep into the heart of a computer under siege.You're the system's last line of defense.

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!

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

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!

Cross blades with space knights in this epic physics-based roguelike where space-age and medieval combat collide. Die often, upgrade, and battle your way across the galaxy, defeating rival ships in methodical skirmishes on a quest to save your kingdom from destruction!

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

Guardians, an extraordinary action role-playing game that transports you to a captivating universe teeming with danger, discovery, and heroism. Immerse yourself in a sprawling, post-apocalyptic world where chaos-infected creatures roam, and the fate of civilization rests on your shoulders.

From one of Fortnite’s lead game designers: 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.

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Defeat enemies and get parts! Build your own spaceship!

Summon the Dark Lord for revenge! This game combines survival and roguelite elements, where you summon monsters and place totems to defeat monsters and take down the Dark Lord!