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.

Become a pilot in the world of Mobile Suit Gundam SEED, for the first time available with English localization! Engage in thrilling, action-packed Gundam battles, complete missions, and tune up your newly acquired Mobile Suits!

Pilot your mech through the wasteland. Build a base, plant, hack, trade and forge alliances. Break free from the oppression of a mad general and reunite with your family in this quirky post-apocalyptic adventure.

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.

Trade to make your fortune in this lo-fi, laid back space adventure, where you'll get help from anthropomorphic animals, gear up your ship, and search for the mythical key to immortality hidden in the depths of space.

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.

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.

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 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!

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.

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.

Shot down and stranded, Skywalker and his drone Wolly must fight to survive on a hostile alien world. Scavenge, craft, and defend against relentless robotic sentinels while uncovering the secrets of the Astra Portal and the mysterious force that brought them down.

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.

This is a single-player action game playable in both first-person and third-person perspectives. Players can choose to pilot a combat mech armed with guns and blades, slashing through disgusting cockroaches in post-apocalyptic ruins to eliminate regional threats.

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.

A fast-paced TPS & FPS where you control a mech in battle. Customize 12 parts: head, torso, arms, legs, booster, FCS, and 6 weapons. Weapon and frame colors are changeable. Use weapons, jump, boost up, run on walls, do rapid boosts, quick turns, and high boosts.

Autopanic is a minimalist twinstick shooter with rogue-like elements. Also a game about acknowledging player action.

Enter the Cold Zone—an Exclusion Zone locked down by a shadowy Bureau. Explore a 3D pixel-art open world, crack rule-based horror puzzles, battle deadly anomalies, and keep your reason as you uncover the truth.

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.

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!

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 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.

Explore space in a hand crafted, physics based universe, with immersive sound and atmosphere. Fight and board ships, collect rare cargo, and upgrade your ship.

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.

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.