Top similar games like Breach the Abyss:

Blast aliens to pieces and start a rebellion in this fast paced pixel art top down shooter where sprinting kills.

Void Prison is a fast paced, endless arcade twin stick shooter that puts you inside of an ever shrinking ring. Survive by fighting emerging enemies around you and don't get consumed by the void. Complete achievements to unlock new skins and powerups and get on top of the leaderboards!

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.

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.

Join Captain Rijk as he attempts to escape from the clutches of one of the most villainous species in the galaxy. Help to uncover the horrors that are being carried out on the fringes of the civilised galaxy and become the divine being prophesised to inspire an uprising and destroy The Domain.

Consume the civilization of the fools who unleashed you upon the universe. Become the Empire Ender.

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.

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

"Raiden" unites! Get ready to blast into a thrilling new dimension like never before!

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. 

lone.AI is an upcoming space RPG roguelite. With challenging, relentless gameplay, each run has the potential to boost your ship's power, speed, and more. As a lone AI, fight your way through the solar system and uncover the secret behind the ZOSMA, an alien race that holds power over the system.

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. *

Primit Shooter 2 is a roguelike shooter set in a universe where cute but dangerous aliens spawn from the Eye Tower. Players must develop their character, pick suitable weapons, and brave through consecutive waves of alien challenges, combining action and strategy for a thrilling experience.

As a lone military engineer on a strange planet you must survive the constant swarms of the hive! Shoot your way through millions of bugs! Collect upgrades and turn your turret into an unstoppable bug killing machine!

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.

Pilot a ship with a charger hanging. Explore an ever-changing space an plug to recharge your energy while surviving the enemy breach in this cable-like space shooter with roguelike elements and plugged resource management.

Brutal (one hit kill) twin stick shooter with hilariously fun and clever enemies. Also has roguelite and Sci-Fi stuff.

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

Exosoul is an adrenaline-fueled top-down shooter that will test your skills and reflexes. Fight for your life against relentless enemies while trying to synchronize your body and soul. You have a powerful arsenal of weapons at your disposal, but you'll need to use them wisely if you want to survive.

Shoot to defeat enemies on a roguelike-ish setting, using multiple weapons and powerful abilities to break the own concept of time! Make deals and pacts to get further on each run, knowing unique characters and uncovering the dark truth on what has really happened... BURN THE WITCH!

Dark Galaxy is an action based rogue-like top-down shooter. You pilot a space drone to oppose the insectoid like species called Minaripods. Illuminate the darkness and get stronger by travelling to different star systems. Can you free our galaxy from the invaders?

Pewt 'em Up! is a retro inspired arcade space shoot 'em up with lots of upgrades, achievements, extras and more.

Blast your way through an endless horde of enemies in this pixel art top-down shooter. Collect their remains in order upgrade your character for increased combat abilities. Tekla is a top-down shooter with roguelite elements.

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!

Astragene is a roguelite shooter where you will have to survive each level facing hordes of aliens. Improve your abilities, choose new upgrades, and create reactions by generating combinations of powerful elements. Each game will be different, will you be able to adapt?

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.

Enter a future of democratized space travel and exploration with one catch – a powerful corporate consortium pulls the strings. An expert combat pilot wakes up unbeknownst of her whereabouts, history and name. She will fight to determine who she is, what it means to her, and what the future holds.

fast-paced, high-difficulty 2D space dogfighting roguelite game.

Delve into this 2D sci-fi action roguelite and survive 8 procedurally generated planets each run. Explore, build defenses, and stack upgrades to stay ahead of the increasingly difficult waves of hostile aliens

Starwave Defender is an intense twin-stick shooter based around wave survival. Dodge swarms of enemies while exploring procedurally generated levels and collecting resources to upgrade your ship. You have a limited number of ships; make your time count, Defender.