Top similar games like Space Defender: Frontier Squadron:

Frantic 4-player laser ricocheting top-down shooter. Keep it casual and enjoy the chaos, or master the surprisingly deep mechanics to obliterate your enemies. Duke it out locally in free-for-all or 2v2.

AGIS - A Game In Space is a top-down twin-stick-shooter.

A twin-stick arcade shoot 'em up across seven neon worlds. Fight inward through a campaign of guardians and motherships or chase high scores in arcade mode, upgrade a fleet of five ships, and watch the procedural neon grid bend under fire. Full controller support.

Fly a momentum-driven ship through procedurally generated dead star systems, then land and fight on foot. Shape each world before you build it, master a deep arsenal, upgrade modules, hunt down 16+ bosses. Four difficulties, New Game+, and upgrades that keep paying off. Discover the Vey.

Escape corruption and deliver truth to the people in the only way you know how. as a space fighter pilot! You steal a ship and flee, it falls to you to duke it out in space and deliver truth to the people. Restore peace. Restore justice. Save humanity and Escape The Kreegan!

Halo: Spartan Assault brings the excitement of Halo combat to Steam for the very first time. Battle your way through 30 action-packed missions against the Covenant as you explore the origin of the Spartan Ops program featured in Halo 4. *DirectX feature level 10 required. *

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.

A broke bounty hunter. A sarcastic robot. 1,000,000 credit debt. Star Scrap is a chaotic twin stick space roguelite. Blast through increasingly difficult waves of enemies to pay it off.

In Deadline: Aphelion, you play as a mercenary tasked with defending the research facility from the hordes of alien spiders that have been drawn to it. 

Alpha Force Zero is an intense top-down bullet-hell adventure that requires skill and planning. Utilize multiple weapon systems including an Auto-Turret with adjustable firing modes and unlock upgrades that you can equip in your ship to give you the upper hand. Dodge, fight, survive!

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.

Blast through asteroids and enemy ships in Starship! Starship!, an arcade space shooter inspired by Asteroids. Fly solo or team up in local co-op, upgrade your ship, and grab power-ups to survive the chaos—or challenge your friends in PvP.

XenoFeud is an insane top-down twin-stick arcade alien shooter, where you must survive hordes of alien intruders while defending a mysterious object in space.

Survive increasingly difficult rounds in a floating arena. Use weapons and powerful abilities to knock enemies into the void before they launch you off the edge, build your loadout during each run, and beat your highest score.

Master momentum in a top-down spaceship shooter. Battle in seven arenas, race for your personal best, or descend into generated caves in a solo campaign. Choose your ship and pilot, use offensive and defensive skills, and decide when to return with your salvage.

Pilot through relentless waves of hostile forces in this fast-paced space-themed, bullet hell, survival shooter. Build your own UFO in the Ship Creator, Survive through a 100-wave campaign, or test your limits in Endless Mode. How long can you survive?

Star Vortex is a fast-paced Action-RPG inspired by classics of the genre. Design your ship, fight through hostile alien sectors solo or with friends, salvage rare weapons and experiment with powerful builds until nothing can stand against you.

A sci-fi twin stick shooter stripped down to the bare essentials with focus on smooth controls and satisfying action.

WELCOME TO A GEOMETRIC SPACE ODYSSEY In a universe of collapsing forms, you are the last vector of resistance. Surviving hordes is half the battle—the ground beneath you is a dynamic, lethal threat! Brace for neon bullet hell, pinpoint physics, synth beats, and endlessly rewarding progression.

Neon Fighter is a tiny arcade game packed with lasers and explosions, in which every few seconds you are forced to switch weapons automatically, making you have to adapt quickly to the new situation and re-evaluate your perspective.

AREA WARS™ is a fast-paced 2D omnidirectional shooter where you battle enemies from every direction in a constantly changing enclosed area. Defeated enemies trigger chain explosions that engulf nearby foes and boost your score multiplier. Built for short, repeatable runs with score-focused gameplay.

You've been dropped into enemy space. Weave your Starfighter between alien spaceships, lasers, asteroids and bombs destroying as many as you can and collecting valuable coins and powerups as you go.

Cosmic Tank is a modern take on the classic game Asteroids. Mine your way to riches! Fight off hostile threats! Upgrade your ship and rent a few helpful drones! Survive epic boss fights!

Engage in an intense space shooter that you can play in single-player or multiplayer with up to 6 players. Play a variety of different spaceships, each with their own unique stats, components, and playstyles!

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.

A 2D vertical shoot 'em up that lets you upgrade your ship with an insane amount of options. From missiles and pods to specials and shields, you can upgrade every bit of your ship from guns to thrusters.

In this unique top-down shooter, originally released in 1987, take on the role of a lone pilot of a scout ship fighting to eliminate the threat of the Macro-Genetic-Mutoids, bio-engineered organisms that threaten to destroy mankind.

A neon bullet-hell where the swarm is alive. Outlast escalating waves with pure movement — no cover, nowhere to hide. Just geometry, reflexes, and the void between enemies.

Master 360° physics-based vector drift in an open-space Survivors-like survival shooter. Build an arsenal of auto-firing weaponry, navigate treacherous asteroid fields, and overcharge broken power reactor networks to escape a corrupted alien AI in a collapsing universe.

Inspired by genre classics like Galaxian, Starcore puts you in the position of a pilot on a dangerous mission to save the rebellion. Dodge, weave and destroy your foes, or die trying. A retro 2D space shooter with challenging bosses you won't forget.

Rendagor is a 2D Top-down Shooter starring a service bot. Just a simple machine... or something more? Uncover dark secrets in Story Mode or master the challenge of Arcade Mode. Shoot, smash, and demolish enemies and destructible environments with a devastating arsenal.

Retro pixel-art top-down space shooter. Battle waves of alien invaders across world landmarks, upgrade your ship, collect power-ups, tackle events & missions, defeat epic bosses, and chase high scores.

Devileader, a fearsome space demon who once have destroyed countless planets of the solar system is about to be resurrected by his minions and fanatics, who want to bring chaos to the universe. Pilot the agile space interceptor Deviship and survive the terror of this demon lord.

Sci-fi top-down twin-stick shooter with 9 weapons, 3 alts and secret hidden collectibles!

Chaotic boss-rush, bullet-hell-y, twin-stick arena shooter mayhem! Dynamically changing arena forces you to be vigilant: Watch the bullets, watch the walls!