Top similar games like Planet Killer:

A physics-powered action roguelike. Grab asteroids, catch missiles, and hurl them back at swarming enemies. Build wild loadouts, defeat colossal bosses, and push deeper into a collapsing galaxy.

Physics based roguelite bullet-hell-and-heaven horde-survivor action game. Research and upgrade spaceship. Traverse procedurally generated galaxies with ability to alter its conditions and effects.

Bullet hell meets auto-shooter in this roguelike color-matcher where RGB itself is your weapon! The Maiden of Light has been captured by the forces of entropy. Six challenging bosses stand in your way and only you can save her!

The Nullblade Collection is a group of all the small, polished games made by Nullblade that were too small to be published by themselves.

A fast paced, action packed, roguelite game with tanks! Blast your way through procedurally generated levels, and build overpowered combinations of upgrades! Face off against a variety of different enemies and epic bosses.

lone.AI is a space RPG roguelite. With challenging, relentless gameplay, each run has the potential to boost your ship's power, speed, and more. As a lone AI, fight your way through the solar system and uncover the secret behind the ZOSMA, an alien race that holds power over the system.

CIPHER 61 is a fast-paced, action-packed top-down-shooter, with tons of temporary and permanent upgrades. Can you make it through all 61 rooms?

Prepare for an interstellar showdown like no other in a gripping roguelike top-down twin-stick shooter set in the vast depths of space. Pilot your advanced starship, engaging in relentless battles against hordes of alien adversaries. Destroy, Collect, Upgrade, Die, Unlock, Repeat.

Comet Force is a Space Arena Shooter Action Roguelite. Build your camp, recruit to compose and grow your troop, collect upgrades and unique effects, fight enemies and bosses, and choose how the threat evolves. Keep your troop strong enough to survive all waves and close off the anomaly.

You should simply try out Roboom. We have quite a long description below, you can read if you like, but experiencing Roboom yourself or as Co-op is the best.

SURVIVE the swarm in this rogue-lite + survivors + asteroids mashup! Exterminate as many alien drones as you can. Upgrade your ship from the crafted deck of equipment and power-ups. You are the Last ship against the Endless... Will your choices be enough to overcome the thousands hunting you?

Galactic Glitch: Prologue is a stand-alone Action-Roguelike game with physics-based combat mechanics. Fight through bubbles of glitched Spacetime, dodge projectiles, bounce foes off walls and hurl giant rocks in challenging twin-stick combat. Play it for free today!

Dark Galaxy is a fast-paced action roguelike top-down shooter. Pilot a space drone to battle an invasive insectoid species. Illuminate the darkness and grow stronger as you travel to different star systems. Can you free our galaxy from the invaders?

Meowmunitions gives you a roguelike bullet hell experience with a unique gun customization mechanic, letting you design your gun however you like. The random nature of the game, with multiple augments and artifacts, forces you to think of new and creative synergies to approach each run.

Brutal twin stick shooter with fun and clever enemies. Also has roguelite and Sci-Fi stuff.

Cosmic Paradox: Noire is a 2D top-down shoot ‘em up adventure set in a world of two overlapping dimensions. Witness the battle between the Vex Accord and the Oronix Empire, increase your odds of survival with the right upgrades and choose a ship that is best suited to your playstyle.

Defend Modulea! Dodge bullet hell, combine modules, and fight off waves of enemies with your custom-built space battleship in this roguelike action shooter!

Run and Gun Roguelite where the goal is to upgrade each consecutive alien drone on death so the next can strive to become overpowered enough to escape the all consuming hive mind.

Blast your way through an endless horde of enemies in this pixel art top-down shooter. Collect their remains in order upgrade your character for increased combat abilities. Tekla is a top-down shooter with roguelite elements.

Pilot an agile star fighter to tear down alien megastructures under fire, then pull off a high-stakes heist from within before everything explodes. When you die time rewinds, sending you back to Moonbase Alpha—your hub for reinvention. Spend your bounty on explosive upgrades, ready for the next run.

A roguelite incremental game where you fight by linking animals.

Fracture Hell is a replayable arcade shooter featuring dynamic destruction and deck building. Choose a class, equip your favorite guns and build a deck of upgrade cards to beat your current high score and unlock new gear.

Beyond Lost Planets is an intense Roguelike Dungeon Crawler Bullet Hell. Fight through enemies and bosses across procedural worlds. Everything from weapons and bullets to powerup and companions is represented with cards. Grow absurdly powerful and create wild, unique synergies every run!

Command your ship in Conqueror Of The Galaxy, an intense roguelite survival and bullet hell game. Face relentless defenses as you conquer entire galaxies, overcoming swarms of enemies and choosing strategic upgrades to become the ultimate conqueror!

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.

Fast-paced roguelike where you mine and explore procedurally-generated asteroids. Collect unique stackable upgrades to aid you in your quest for riches! (and freedom...)

It’s time to cluck around and find out. Gear up and pull on the helmets of the Battle Roosters, a hotshot space brigade of poultry with panache. In this quirky, roguelike, bullet hell adventure you’ll combine weapons, upgrades and killer strategies to recover space’s best taco ingredients. Bwark!

A fast-paced addicting space shooter with an inspiration taken from many modern games. A project I have been passionately working solo for 2 years+!

Mow down the alien hordes, scout for resources and survive. Dreadnought is a mix of Action Tower Defense Survival and Shoot 'Em Up Bullet Hell where you control the ships turrets & defend against waves of enemies. Choose your weapons, upgrade your ship & brace yourself, the horde is coming.

Gunmancer is a science fantasy roguelike top-down shooter. Summon guns as you shoot your way through mysterious randomly generated dungeons full of ancient forbidden magic of guns and dangerous monsters.

Collect unique and powerful upgrades while fighting through hordes of charging, shooting, angry and most importantly, evil enemies in this chaotic rougelite shooter.

Space Ace is a 2D top-down shooter that focuses on upgrading your ship to fight through levels of Bosses and smaller enemies. Play with keyboard + mouse or Xbox controller.

---Red---Tether--> is an action-packed “combat-puzzle” roguelite. You will tear apart massive space fleets, using nothing but your advanced tether harpoons. Pull and crash ships into another, rip their components off, then grapple-swing your way out of danger.

Rise of Robots is a Roguelite Shooter where you build a powerful weapon as you fight to survive ever increasing swarms of robots. Stack powerups to create a unique weapon each run and beat the challenge on each map

C6: Frontlines is a bullet hell co-op roguelike where only YOU (and your friends) can bring the Azapall galaxy to peace. Wield 30+ weapons and gadgets of mass destruction to even the playing field, wave after wave, against a seemingly endless onslaught of evil!

Refighter is a lightweight Rogue-like flight shooting and strategy game where players will control spacecraft to engage in battles in space, equipping various bullets and upgrading their levels. Face off against a diverse array of enemies and Bosses.