Top similar games like Unstable Star:

Hexagonal Explods is a vertical shoot 'em up game where you need to defend the earth from aliens. Collect power ups, fight funny bosses and... well... SHOOT THEM UP!

Turbo Shot combines a puzzle-filled top-down adventure with exciting gun-based combat that plays out in regular seasons of free-to-play single player and PvP content.

A clone army is taking over the world. Kill them all in an epic single-player campaign to save humanity, and yourself!

Star Fox meets Touhou in this action-packed sci-fi shoot 'em up, set to a rockin' synthwave soundtrack reminiscent of the Hotline Miami series. Pick one of five mech pilots and wield the eponymous HeartLinks to defend the Hydra Galaxy from the Omni invasion. Master yourself, master the machine.

A side-scrolling shoot'em up, original, with beautiful 3D graphics, intense and a little wacky. In line with classics such as R-Type but with its own style to make you live an adventure full of fun! A special spaciale adventure but not only in space and not only shoot'em up...

Tarantula Virus is a randomly generated roguelike topdownshooter in a sci-fi style with a lot of items and enemies. Upgrade items unlock new characters find allies and defeat powerful enemies and bosses.

Aliens are very fond of flex. This guy is no exception, he wants to dance for you. But for that he needs space drugs for aliens. You need to kill all the guards and steal drugs.

Action STG with 2 types of perspectives. Commence operations! His only partner “Rose” broke down from the impact of the spaceship’s crash landing. Find a way to repair Rose by defeating enemies with various skills and equipment!

"Lost Colony" is a Twin-Stick Shooter Action-Roguelike set on an abandoned space colony. Guided by your drone companion, you must explore the planet and defend yourself from the swarms of aliens and the corrupted colony security system. Will you uncover the secrets of the Lost Colony?

In this 2D twin-stick shooter you fly your spaceship, fight in epic space battles, discover new planets, invade new terrain, avoid traps, dodge bullets, customize your weapons and shoot your way through hordes of enemies. A different experience every time you play.

Choose your ship and command it against an army pitted against you in this wave-based arcade-style bullet hell space shooter. Fight for as long as you can with powerups acquired through the catalog, and blast through everything in your path.

Master the effect of gravity on the bullets and find out which characters are who in order to defend against the attack of the empire! Immerse yourself in the symbiosis of a top-down shooter and an arcade adventure.

Reinforced Machine is a twin-stick shooter action game. Choose your favorite mech, each with their own unique skills. Unleash powerful attacks with the help of your AI-assisted weapons to aid you in your battle against legions of cyborg creatures.

Project MORPH is an action RPG with a unique player shapeshifting mechanic which brings a new level of combat dynamic and player progression. Become your enemy, literally, and fight fire with fire!

Top-Down Shooter with a mobile APP interaction.

Cowboy Hell is a top-down, bullet hell shooter following a recently deceased cowboy and his horse as he adventures through a vibrant open world. Shoot cows, dodge bullets, collect guns, solve puzzles, and befriend characters as you work towards defeating Jeff Bezos himself!

Top-down 3D action shooter. Fight against swarms of rogue AI machines and survive as long as you can!

Akka Arrh is a modern take on a scrapped project from the 1980s, providing players with a fast-paced, addictive, arcade shooter experience and psychedelic visuals. Protect your life rings as you chain together combos and go for a high score!

A fast paced, super stylized, roguelike, twin stick shooter. Nine levels of designed, hand painted and procedurally generated, punchy and punky fast mayhem in a uniquely stunning attitude filled world.

Save humanity! Help Jack Big Chin defeat the alien invaders, in a hard action-adventure game with 3D platform elements, where you must improve your weapons and activate cannons to complete your missions.

A casual, easy to play, story-driven shoot 'em up where your path choices affect the outcome of the story! Select one of three characters, each with their own storyline, and see how the choices you make change the way the game unfolds.

Play as a spy vying to stop unthinkable destruction. Sneak, fight and trick your way through countless grunts, guards and bosses. The 60s themed comical stealth experience will challenge you to foil the destructive plans of a malevolent overlord within pre-set in game hours.

Space Survival is the next great SIMPLE 2D casual space action shooter where you have to defend against wave of enemies, have fast reflexes and strong will to win. It is great way to relax, but also a great challenge. How long can you stay focused?

Your Otter Space crew has been captured by evil robots. Save your team and fight together through endless rooms of evil robots.

Kona, an ice artist with a reputation for mischief, and Snowrabbit, a white-furred snow rabbit full of desire. After hearing the story of Aquus, the mermaid goddess, the two down-on-their-luck artists break into the monastery of Aquus, nicknamed "the sea on land," to make a statue of a goddess.

Bad Chicken is a retro styled sideway scrolling shoot-em-up inspired by the retro classics. It takes place in 8 locations in the Ferus system, each one with different challenges, and dangers.

Set in the year 2078, CYBERDAD is a 2D cyberpunk gunfight dungeon crawler following a disgruntled father seeking to rescue his daughter, and exact his revenge.

Enter the cockpit of your spaceship and prevent the destruction of our homeland! You and your friends have to dodge various attacks and fight many enemies. But your Twitch chat can support you in your defense and your subscribers can even accompany you as wingmen!

Super Trunko Go is a challenging top down shooter that takes place in a thrilling space world. Navigate our hero Super Trunko, and help him restore peace back to the planet!

Event Horizon is an action-adventure sci-fi shooter with the heart of souls-like utilizing gun modification and first-person scanning to explore the unknown depths of the cosmos.

This top-down sci-fi shooter features a unique “commandeer” mechanic that lets you hijack any ship you see. Take over star-fighters, cargo ships, and even entire battle stations. Explore a galaxy filled with dark humor, absurd characters, and strange environments on a quest to get your ship back.

In an underground corporate facility, a lowly employee goes all out to uncover the truth and gain their freedom.

Local middle school teacher fights angry orange bald man army with marbles and furry creatures. Baula. Quest. BaulaQuest.

The FUR Squadron faces a mysterious threat during what appears at first to be routine virtual reality training.

Classic gameplay, with bullet-hell style gameplay. Explore the world like in the classic The Legend of Zelda.​ Fight with Mighty MiniTank on this epic adventure and uncover the secrets of a mysterious world.