Top similar games like Planet Nine:

Cyber Heart is a single-player, story-driven mech shooter where you, a commander, ride your customizable mech through an open world to fight against enemy AI machines.

或许在某个时空里他已经战败了 但是在这里或许可以改写一切，传说最强的赏金猎人！ 那段未完的故事 将如何开始又如何结束...

Monkey Barrels is an action-packed twin-stick shooter in which you blast waves of weaponized electronic devices with tons of crazy unlockable weapons. You can experiment endlessly with different combinations and find the loadout that best suits your playing style.

Blackwind is a top-down sci-fi action game that puts you in the shoes of a teenager trapped inside a prototype battle armor suit during an alien invasion. Face off against enemies, cut through their ranks, and fight back to stop a planetary invasion.

A【Pixel style, rouge、type horizontal、 shooting、 defense 】 game

Explore a vibrant world in this action adventure RPG where you get embroiled in a war between the 7 major races of the rainbow world.

Rust & Roots is a mission-based top-down shooter experience. Fight against hordes of robots in a devastated world, explore a semi-open world and survive action-packed battles. In a dark and realistic atmosphere, become humanity's last hope and resist the machine apocalypse!

A game about exploring space in search of hospitable planets for colonization. Casual gameplay and short rounds make it a great option for killing a few minutes.

A top down 2d pixel art sci-fi shooter. Destroy threats, solve small puzzles, kill bosses in each level to advance to the next. Upgrade your drone with the power-ups and weapons you find around the levels to become increasingly lethal.

Liberty Fighters is a fast-paced top-down extraction shooter with mixed RPG elements. Explore the vast open world space, loot gear or materials and sell it for the best price. Upgrade ships or buy new ones to fight in action tense space combat missions.

This is a rogue-like top-down shooter where you control a spaceship that is sent out to explore the caves on the Moon. Once you enter the caves, you find out that there are enemies. It is up to you to survive against them while also trying to find the path down to the next level of the caves.

Livelock is a co-operative top-down shooter where you play solo or with up to two allies to break the cycle of infinite war between machines. As one of the remaining Capital Intellects, your role is to unlock Eden and revive humanity.

A space action-adventure unlike any other: navigate your spacecraft through a galactic-scale mystery. Make sure to loot, craft and upgrade your space fleet. Play the story campaign or test your skills in vicious arena modes against AI opponents.

Welcome to Keplerth! Try to survive on a hostile alien planet in this 2D sandbox RPG, where you can choose to live alone or fight side by side with your friends in the online multiplayer mode. Survive, build, farm, fight, and explore your way to victory in this open-world adventure!

Solar Sails is a space action RPG with adventure elements. Control a pirate ship, plunder the royal navy, launch a scout duck to search for treasures, upgrade your ship with alien technologies, and sail onwards to unveil the darkest secrets of the universe.

Explore the mysterious and beautiful planet Gomi on foot or with your spaceship in this action packed platformer and space shooter hybrid. Your mission is simple, retrieve A.N.N.E and escape.

Pilot your fully customizable Arsenal mech and join your fellow mercenaries in defending humanity from the corrupted machines and gigantic robots in this post-apocalyptic action game!

A huge hand-crafted world packed with 13 unique bosses, a gripping story, and tons of enemies, Spaceport Hope is the ultimate test of gaming prowess.

Break Free is a fast paced third person sci fi shooter game. The creatures that live among us have made the Earth uninhabitable for human life. You are mankind's best hope for survival. Make no mistake, war is coming and you shall die today, then you shall live to fight again tomorrow.

Explore a post apocalyptic world in an attempt to restore balance to nature. Delve every hidden facility you can find and loot the treasures within. Find upgrades to personalize your shooting and exploration experience. Get help from the ghosts of humanity's past to solve the riddle of its future.

Build your ship from humble beginnings to epic proportions in Astronormous Survivor. Battle scaling enemies, unlock new modules, and experience thrilling space combat with a retro 90s mecha vibe.

Fred Johnson's: Mech Simulator is a third-person mech shooter and exploration game. Stranded on an alien world, pilot a powerful mech, battle enemies, solve puzzles, and uncover secrets. Scavenge resources and fight to repair your ship and escape.

A new threat arises! Will you stand up and protect the planet?It’s time to SUIT UP, survive an alien invasion and protect your loved ones in a world where Wave Survival, Twin Stick Shooters, RPG and Roguelite come together in one epic mashup!

An indie story-driven space shooter with intense battles, escalating enemy waves, and massive boss fights. Choose and upgrade ships, unlock powerful weapons, and protect your allies. Upgrade your base and construct a battleship to take on even stronger enemies. All set to a rock & synth soundtrack.

Soda Sabotage is a Sci-fi 2D top-down shooter, where the player guns his way through 25 levels and 5 bosses belonging to a soda weapon factory using their own weapons against in order to disable the evil soda weapon making factory. Shoot, dash but most importantly survive!

A deep, tactical shoot'em up. With every takedown, you’ll earn cash and xp to upgrade your ship and unlock new abilities. Online and local co-op. Unique versus mode. Realistic physics and water simulation.

Commander, customize and build your Mechanical Assault Skeleton Suit (M.A.S.S.) and lead the fight against an alien invasion bent on exterminating the human race. The fate of humanity is in your hands.

A classic, vector-graphics arcade shooter with a compelling narrative story and a massive, detailed skill tree to advance your character. Upgrade your attacks, defenses and evasion as you battle through waves of progressively more difficult enemies with each round.

Fight hostile drones that try to keep their recently gained autonomy by either shooting or morphing into them.Biodrone Battle brings classic top-down action rooted in the pioneer gaming era of the 1980s into your living room.

Master the ninja art of wall-running while fighting room after room of syndicate thugs and deadly robots in this unique top-down action shooter.

Take over a disfunctional Waste Management Facility on a distant planet. Build incinerators, recyclers, robots, turrets, and more. Battle vicious creatures on the planet's surface with powerful weapons!