Top similar games like Starwave Defender:

Survive in the deep void of the galaxy against thousands of invaders! Nebula is a challenging bullet hell, twin stick shooter where you have to face endless waves of space enemies. Additional map resources and space drones can provide you a support but be wary, they can as well become a deadly trap.

A fleet to defeat, a weapon to collect, and one life to decide everything in the roguelike shooter No Space For All. Let the universe know your second name!

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

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

Collect synergizing items to create an overpowered character to fight hordes of cyclops monsters. Cyclo Chambers is a fast-paced, top-down arena shooter with light rogue-like elements. 150 items to choose from to create frantic combinations. Different runs every time.

Can you survive the Empire's onslaught? Avoid the attacking enemies and upgrade your ship to last long enough to escape in this space survivorslike.

Lost Colony is a sci-fi twin-stick shooter roguelike. Battle aliens and rogue drones with your evolving combat drone companion. Explore a shifting colony, collect alien tech to upgrade weapons, boost your drone's powers, and uncover the dark forces behind the colony's fall.

Arcadium is a survival roguelite set in a dynamic, ever-changing universe. Journey across space, harvest planetary resources, and craft powerful builds to eradicate relentless waves of aliens. Each playthrough unveils a new and uncharted universe, ensuring endless challenges and discoveries.

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.

Space Ace is a 2D top-down shooter that focuses on upgrading your ship to fight through levels of Bosses and smaller enemies. Play with keyboard + mouse or Xbox controller.

Code of Shadows is a real-time roguelite where XP never sleeps and time obeys you. Pause on demand, evolve mid-fight, command support drones, and shut rift-spawned hordes across shifting dimensions.

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.

You Are Circle is a fast-paced top-down shooter with roguelite elements and a minimalist neon look. Use multiple powerful and upgradable abilities simultaneously while fighting your way through procedurally generated mazes filled with challenging and clever foes.

Become an agent of vengeance in this bullet-heaven action roguelite! You are the lone survivor of your squad, on an alien planet with just your weapon, a jetpack, and the courage to keep fighting. Kill off alien swarms and transform their valuable guts into explosive upgrades and vital utilities.

Battle time and terror in a shoot & survive extraction roguelite. Select your hero and survive the relentless cosmic surge. Shoot, level up, topple bosses, and amplify your powers to cosmic levels. Embrace the Blastard within and unlock new heroes, powers, and perks to use on future runs.

Core Breach is a fast-paced, twin-stick arcade shooter in a pixel art style. Play as a Trojan worm virus, outmaneuvering and destroying antivirus enemies. Upgrade your worm with powerful attacks and skills as you fight to breach the CPU core and uncover its secrets

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.

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!

A physics-powered action roguelite. Grab asteroids, catch missiles, and hurl them back at swarming enemies. Build wild loadouts, defeat colossal bosses, and push deeper into a collapsing galaxy.

Mechanophagia is a challenging bullet hell shooter with roguelite elements, set in a dark and gritty sci-fi world. Blast through waves of fleshy aberrations and defeat monstrous bosses. Can you outmaneuver the relentless enemy onslaught and save the robots from their inevitable extinction?

Echoes of Elpis is a twin-stick shooter sci-fi roguelite. Upgrade weapons, discover new tech, and uncover a secret past as you battle through Elpis on an epic treasure hunt.

Repel extraterrestrial entities!

Tankmageddon is a fast-paced roguelike tank game where you play as Ed, a pilot and mechanic on an Earth facing invasion. A ruthless A.I. has built a tank factory on the Moon and plans to wipe out humanity. Face hordes of enemy machines and use their parts to defeat them.

Survive the void in this retro-futuristic roguelike space shooter! Dodge intense bullet-hell patterns, upgrade your ship, and scavenge for survival in a galaxy full of chaos. Every run is a new fight for existence.

Destroy enemy ships, blast away asteroids and unlock new weapons / ship abilities in this endless arcade roguelite. Earn resources through each of the 7 game modes to upgrade your weapons to outlast them all.

Tear through hordes of otherworldly creatures and defeat their ruler before the universe ends. Travel between planets, gather powerful relics, and shape the galaxy to your whim in this objective-based action rogue-lite.

Kill all enemies, Upgrade, Repeat! Defeat thousands of enemies in this incremental roguelite and become unstoppable as you progress through the game.

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. *

DEEP ROCK GALACTIC: SURVIVOR is a single player survivor-like auto-shooter. Take on hordes of lethal aliens, mine riches, and unlock powerful upgrades to survive, as you wield the full arsenal of Deep Rock Galactic. It's one dwarf against all of Planet Hoxxes!

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.

Launch into a fierce roguelite action in this top-down twin-stick shooter with bombs! In a robotic world, control Lizzy and their team of unlockable beasty bots in a quest for upgrades. But beware, needed resources are guarded by swarms of Steel Sentinels. Survive them to craft synergistic builds.

Welcome to the world of Polygun, an endlessly customizable hero shooter where you battle against an ever increasing hoard of bloodthirsty shapes! With an array of upgrades to choose from, you'll quickly build from humble beginnings into a hexa-bustin killing machine!

Prepare for an interstellar showdown like no other in a gripping roguelike top-down twin-stick shooter set in the vast depths of space. Pilot your advanced starship, engaging in relentless battles against hordes of alien adversaries. Destroy, Collect, Upgrade, Die, Unlock, Repeat.

Defender's Squad is a sci-fi vertical scrolling shooter 2D that combines 7 different levels. Play Solo and pick one of the 3 ships to kill enemies and save the earth from aliens.

Don't get swarmed in this incremental top-down shooter! Unlock new mechanics and upgrades as you defeat more and more enemies. Let drones aid you in combat and use your abilities to become unstoppable.