Top similar games like Invasion Protocol:

Enter the Gungeon is a bullet hell dungeon crawler following a band of misfits seeking to shoot, loot, dodge roll and table-flip their way to personal absolution by reaching the legendary Gungeon’s ultimate treasure: the gun that can kill the past.

Bullet Dungeon is a fast-paced roguelike where every moment is filled with chaos, and excitement. Dive into intense combat, face challenging bosses, and embrace the thrill of survival inside the dungeon.

Zap, blast, loot, repeat in this procedurally generated twin-stick arcade-shooter. Fight aliens, fight robots, fight anything that moves and a few that don't. Then loot them all.

Santa Claus embarks on a mission: defeat Krampus and his army of renegade elves. An explosive, action-packed adventure in a top-down shooter game.

Juicy Realm is a roguelike game in which players must square off against bizarre fruits all across the world. The line between the animal and the plant world has become blurred, and the food chain has been completely disrupted.

Toroom is a dungeon crawler roguelike-like top-down shooter, where the protagonist just wants to come back to his bedroom after waking up in a world of fantasy. Fight your way through multiple biomes, clear rooms full of enemies, get as much loot as possible and defeat the bosses in your way.

A bullet hell that let's you pickup and throw the furniture! Throw grenades and activate shields, stun enemies, shoot and dodge enemy fire and set the floor ablaze. Buy a porcupine shotgun from the shop or try a rancid burrito!

You are tasked to destroy the swarms of alien invaders as they attempt to annihilate your race from existence.

A fast-paced action roguelike where skill beats firepower. Outmaneuver swarms, harness Poison/Inflame/Traumatize, and expand the game with mods & co-op.

Rogue together! OrbWars is a fast paced, action oriented party game featuring easy to learn high intensity gameplay. Featuring seamless local and online multiplayer, gather your friends and lead the charge against dungeons filled with traps and foes as up to 4 players!

Ballistic Tanks is the best tank game you've played since the 80's. Battle in exhilarating local multiplayer, or challenge yourself in an intense solo/co-op arcade mode. Play 5 game modes in over 50 maps; and destroy your enemies in a frenzy of bullets, lasers, and explosions!

Survive and destroy monsters to your heart's content with the help of powerful and unique characters. Unlock new characters and discover the synergies with their abilities to unleash game-breaking builds and slay everything on your path.

Choose your character from many Sector Sweepers and clean the next planets from ever-growing enemies in this top-down action roguelike shooter. Unlock new sectors by defeating enemies and upgrading your weapons or hero powers. Be the best Sector Sweeper the company ever had!

Immerse yourself in this mental arithmetic roguelike in which you play as a little alchemist. Multiply, subtract, add to make the right potions and complete as many orders as possible!

Brotato is a top-down arena shooter roguelite where you play a potato wielding up to 6 weapons at a time to fight off hordes of aliens. Choose from a variety of traits and items to create unique builds and survive until help arrives.

Relic Hunters Zero: Remix is a remaster of the FREE 1 million player hit game about blasting evil space ducks and turtles with tiny cute guns. It’s fast, it’s tactical, and feels deliciously smooth to play. Unlock new weapons, characters and relics to defeat the Ducan Commander!

DreamCell : Lost in Nightmares is a randomly generated action with rogue-like elements. Conquer your nightmares and find a way out of your dark dreams in single player or co-op mode!

Explore a neon galaxy in your very own battleship in this 1- to 4-player couch co-op adventure.

A 2-player local co-op base-defense survivor. You're wired together by a power cable — stay close to share power and hit harder. Scavenge scrap, build a fortress of turrets and walls, then survive OKTO's endless robot siege. Fully solo-playable. Couch co-op & Remote Play Together.

Dungeon Destroyers is a top-down arena survivor rogue-lite where you and up to 3 friends slay thousands of enemies and bosses while diving deeper into the dungeon to find it's core and destroy it. Choose from a variety of races, classes and items to create unique synergies and DESTROY THE DUNGEON.

BSG: Big Space Guns is a coop bullet hell roguelike where you step on giant buttons to activate cannons while you dodge bullets.

Survive the treacherous sea in this quirky multiplayer shooter game! Play solo or team up and fight off Cthulhu's minions. Master a unique recoil-based mechanic to blast enemies and chart your course. Mix and match upgrades to craft the perfect sea-surviving strategy!

Assault Android Cactus is an intense arcade style twin stick shooter - pick from one of nine unique synthetic heroines and blast your way through overwhelming robots hordes to save the ship from its own workforce. Supports single player and local co-op game modes.

Super SteamPuff: Double Reload is a frantic arcade shooter set in a universe of infinite absurdity! Master 44 unique characters with wild abilities, battle endless waves of bizarre enemies and bosses, or challenge friends in chaotic local multiplayer for ultimate supremacy!

Help the government agents in black thong to end the alien threat and the invasion of the machines. 1 or 2 players. Individual and cooperative. Gamepad compatible. Demo available.

Fight against endless hordes of zombies in this action-packed, round-based survival game inspired by classic zombie shooters! Explore diverse maps, upgrade weapons, deploy automatic turrets, and call in airstrikes. Customize your arsenal with attachments and skins. Play online or in split-screen.

In this 2D couch co-op adventure, team up with a pal to save the world from the playful chaos caused by your shipwrecked party friends. Together you must share and swap controls, combining your abilities in the ultimate showcase of friendship.

Run into hell and spray it down in this couch coop twin stick shooter. Team up with 1 to 3 friends and save victims, houses and trees from the flames and those who ignite them. Enhance your waterpower with special upgrades designed to beat the heat from the unique fires you'll encounter.

Demon Countdown is a Bullet Hell roguelike where hordes of Demons lurk in waves from hell, Kill all’em while sun is brightness… Every map is unique, and you can Play coop with your friends. Buy Skill boost Temporal! Will you be able to survive Before nightfall?

Mother Nature has no mercy! Turn bug swarms into fertilizer as a mutated plant. Take root, evolve, and create your garden of death with unique combos. You are the top of the food chain in this chaotic arena!

Time Wasters is a space shooter bullet heaven roguelite. Equip and upgrade weapons, destroy swarms of enemies, and collect Time & Space Cubes to bend the timeline to your advantage.

Dive into exhilarating combat in this roguelite, top-down shooter where survival is key! Face relentless hordes of monstrous foes, and conquer epic boss battles. Play solo or team up in co-op to race against time and see if you have what it takes to survive this mayhem of blood butts and guts!

Dive into Liminal Descenders, an intense top-down pixel art roguelike "survivor style" action game set within the mysterious Backrooms. Your mission is to survive a limited amount of time in each zone while facing relentless waves of enemies and upgrade your habilities.

Play solo or with friends in this 4 player local couch co-op roguelite auto-shooter where enemies aren’t your biggest problem; your friends are! Smash foes, dodge bullets, and enjoy chaotic trolling as you punch, throw, and ‘accidentally’ sacrifice each other to survive relentless waves of enemies.

Fast-paced top down shooter. Single player or 2-4 players in local multiplayer / co-op. Sci-fi setting. 3D physics makes the gameplay more dynamic / immersive than traditional 2D shooters. Varied weapons, enemies and interactive environments. All set to a pounding rock / electronica score.