Top similar games like Galaxy At War:

Cyber Siege is a fast-paced shooter with pure gameplay. Play solo or in local co-op up to 4 players. Upgrade your character and weapons as you fight 50+ enemy types across 20 levels in 4 different worlds.

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!

VOID SKIRMISHER is an arcade co-op shooter for up to 8 players: jump the gate before the front line even exists, and face down hostile fleets as the first wave out where nobody's been before.

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?

Gather a squad and fight for survival in We're All Going To Die. Work together with a squad using abilities, equipment and exploring different levels to make the most of your fight against your demise, after all, you're all going to die at some point.

An arcade shoot'em up with unique power-infusion gameplay. Face down an unknown army alone or with a friend in online or local co-op. Navigate the cosmos to save the remants of humanity, or join them in extinction!

Be THE Cowboy in this top down shooter that allows you to upgrade your health, dash speed, and sword strength, as well as 19 weapons, with the souls you collect from your slain enemies!

Poly-Vinyl Pests! takes place many years in the future, where humans are long gone but plastics still litter the earth. Play as two ants from rival colonies in this twin-stick shooter to both squash plastic-laden pests and to prove the superiority of your colony!

A top down shooter game fighting against large swarms of insects alone, or recruit friends to fight along side you! Buy and craft new equipment to help you rid the world of the swarm!

Grab your friends and build and fly your own customisable spaceship. With local and online co-op customise your spacecraft with a wide variety of components, you must work together to figure out the best way to survive your journey!

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

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. *

Complete high stakes missions in this intense social deduction twin-stick shooter, where friends can quickly turn into informants, bent on sabotaging you at every turn.

Become humanity's last hope. Gear up, upgrade, and unleash hell in a relentless third-person sci-fi shooter against a ruthless robotic army. The future is yours to forge in fire and steel.

Star Jet Alpha is a top-down space shooter inspired by classic arcade games. Progress through each stage by blowing up enemy space stations while avoiding or destroying enemy missiles, space mines and asteroids. Unlock Star Jet capabilities by completing stages.

Deflect, don't dodge. DEFLEKT is a neon arena shooter where every bullet fired at you is a weapon you can steal - catch it and send it back. Fight through 15 handcrafted arenas and 15 unique bosses, solo or in local co-op and versus, with three switchable soundtracks that match your mood.

Ultra Mega Planet Battles is an intense arcade-style, space-based, twin-stick shooter. Players can play by themselves, or with up to 3 friends local co-op or Steam Remote Play (total of 4 players). Select your character, select and modify your ship, then get shooting!

A fast‑paced 2.5D shooter built entirely solo on a custom engine, featuring multiple game modes, ship loadouts, online and local co‑op, and over a decade of continuous updates. Battle alien forces through handcrafted missions, survival challenges, and intense boss encounters.

This lightning fast arena shooter brings you right back to the highscore hunts of the arcade era. Use your arsenal of deadly weapons wisely against the increasingly ferocious monster hordes to survive as long as you can.

Blast your way through enemy lines to defeat Inferno, a madman intent on global domination. Destruction just got awesome.

Earth Space Defenders is a starship twin-stick real-time shooter action game. Experience story of menacing green smoke that plagues whole universe. Supports steam multiplayer and party play with multiple controllers.

Play as one of 7 pilots in this thrilling sequel to a SHMUP classic. The time has come for a new generation of Psyvariars to rise… and save humanity.

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!

Saucers is a rogue-lite top-down twin-stick arena style shooter featuring extensive weaponry and upgrade paths so that every run is unique. The further you get, the more weaponry you can stack up to devastating effect. THIS GAME REQUIRES A TWIN STICK GAME CONTROLLER TO PLAY.

Brace yourself for explosive space battles in GalaxIverse II! This intense multi-directional shooter puts you in the pilot's seat against alien fleets and colossal capital ships.

Take down hordes of alien invaders with your Power Shot, Truxton Beam, Thunder Laser, Homing Shot, Star‑mine Shot, and more! Don't forget to breathe as you face off against gigantic bosses in the ultimate battle for humanity’s survival!

An explosive 80s-inspired top-down military shooter where skill, guts, and firepower decide everything. Choose your route and fight for the highest score.

Classic Asteroids® updated with modern gameplay and perfected controls. Explore hazardous environments and sneak around asteroids to surprise attack giant bosses. Upgrade your ship to use additional power-ups. Single player or fight with up to 3 friends with intense local coop.

Survive as long as you can in an endless bullet hell with randomized stats and weapons.

The Horde Wants You Dead is a casual, top-down shooter with up to 4-player online co-op. Ambushed by an angry horde, you and your friends face a fight for survival against thousands of relentless enemies!

A physics based twin-stick shooter. Survive as long as possible and get a high score. Use your gravity beam or your gravity mine to destroy endless waves of enemies.

A slow paced, multiplayer bullet hell where everyone is a tank.

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.

Guerilla Cubes is an action-packed couch co-op shooter where a special ops squad battles a stupidly big army to reclaim Cube City from the ruthless BOX BOSS.