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!

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!

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!

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!

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.

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!

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!

BlastZone 2 is a fast paced side scrolling shooter that combines 2D and 3D gameplay elements with a shifting camera. Play solo or join up with a friend locally or online to battle the alien forces! There are many game modes, ship types, and difficulty levels, find your favorite combination!

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.

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.

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.

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.

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

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.

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

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.

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.

A fast-paced mech arena shooter mixing arcade intensity with skill-based unlocks. Unleash powerful ultimate forms, mix and match skills to define your playstyle, and master each unique combat machine to unlock their signature abilities.

PhaigeX is a fast-paced "Bullet Heaven" space shooter, tasking the player to explore space sectors and contain a rising incursion of rogue AI-controlled units. Pilot a variety of ships, call in the support craft, and use a myriad of upgrades to lay down heavy firepower towards the enemy forces.

A score-driven vertical STG built around aggressive grazing, medal chaining, and risk-reward survival mechanics. Dodge impossible bullet patterns, manipulate time itself, and push for the ultimate 1CC.

1–4 player co-op survival where you fight through waves of enemies, rack up kills, and collect powerful pickups to stay alive as long as possible. Fast-paced, chaotic runs push your limits every time.

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!

Pawarumi is a modern shoot’em up set in a retro futuristic sci-fi pre-Columbian universe. You’ll take control of the almighty ship Chukaru and its three unique weapons! Shoot wisely to either do double damage, heal yourself or charge your Super Attack!