Top similar games like Deep Space Siege:

You've escaped from the galaxy's most secure space prison, and now there's a bunch of angry lawless chasing you. You must survive, fight for your freedom, and outrun these grumpy pursuers. Asterobits delivers a relentless (and slightly absurd) escape in an arcade-style roguelike space shooter.

Blast your enemies! Create the ultimate build! Travel to the edge of space, in this epic rogue-lite action packed bundle of chaos inspired by slay the spire & FTL.

S.R.A Project is a challenging roguelike bullet hell wave survival game. Face cosmic creatures, improve through skill and perseverance, and master a world that rewards learning and adaptation.

Brace yourself for an intense bullet hell experience! Fight your way through challenging levels, defeat bosses, upgrade your weapon and get the highest score!

Sci-fi RTS and Top-Down

A cosmic bullet-hell roguelike. Holy Justice is an exhilarating arcade shooter where you upgrade your ship with Core Enhancers, create unexpected combinations, discover unique devices at critical moments, and unleash outrageously powerful builds.

A fast-paced roguelike space shooter where every credit counts. Fight through dangerous sectors, upgrade your ship mid-battle, and convert your earnings into permanent power. Because when you die, you keep what matters.

It’s time to cluck around and find out. Gear up and pull on the helmets of the Battle Roosters, a hotshot space brigade of poultry with panache. In this quirky, roguelike, bullet hell adventure you’ll combine weapons, upgrades and killer strategies to recover space’s best taco ingredients. Bwark!

Andromeda Wars is a retro styled space RTS. In Andromeda Wars you must gather power, build a fleet, build defences to defend your mothership, and try to survive the onslaught from the opposing factions. Each ship you add to your fleet gives you powers but also reduces your dwindling resources.

This roguelike spaceshooter pits waves of enemies against you in your pursuit to reach the end of the galaxy. Improve your ship with permanent upgrades and select temporary upgrades during a run to pursue achievements and and kill bosses.

Fly, Build, and Fight in a modular spaceflight roguelike set in a hostile alien universe. Control the ship’s movement with high precision, build bizarre ships from random parts, and turn cosmic chaos into mastery as you battle to survive.

Deep in the vast galaxy, you are the last survivor. Waves of enemies keep coming, and the universe is filled with unknown dangers. Your only mission is to survive within the limited time. Pilot your spaceship to fight, gather resources, and upgrade your weapons and abilities.

Stel is a spaceship action-adventure game with procedurally generated elements. Fight dangerous foes, improve your ship and explore the different levels to decipher a mysterious problem, the Quantum are disappearing...

Broadside Renegades combines auto-firing weapons with manual ship abilities in a rogue-like space pirate adventure. Choose your captain and upgrade your ship to steal the space kings booty. Warp ahead to stay alive, and mind your bearing.

Explore the remains of a dead god as an AI trying to find your way back to your crew. Scavenge equipment, recruit allies and face powerful foes in this sci-fi roguelike adventure.

Bullet hell meets auto-shooter in this roguelike color-matcher where RGB itself is your weapon! The Maiden of Light has been captured by the forces of entropy. Six challenging bosses stand in your way and only you can save her!

Fast paced Top-down shooter! Smartly use IRCM to evade the constant barrage of bullets and missiles and destroy everything that stands in your way.

Take control of a spaceship in this top-down action shooter and defend yourself and earth from the unknown mysteries and horrors off space!

Don't dodge. Break through. PNR: Point of No Return is a space opera roguelite where you charge into a storm of enemy fire, intercepting every shot while assembling a different build each sortie. Unlock battleships, equip devastating weapons, and wipe out the enemy fleet. Do you have what it takes?

Dodge, collect, and survive. Every piece of salvage you grab makes your ship deadlier and tougher.

A sci-fi roguelike shooter where aim and movement are unified into one mouse. Pilot a Simuler, command your ship, deploy escorts, and tear through colossal bosses. Easy to grasp, ruthless under pressure.

In this top-down roguelike shooter game you go through levels of enemies to defeat [???] which escaped from [???]. You do this with the help of weapons and items you find on the way. You can equip up to two weapons. Mix and match the weapons and items you find to make combos that work together!

Thetawave is a physics-based space shooter with procedurally generated levels, diverse foes, and distinct characters.

Build your warship and explore a galaxy full of unpredictable encounters. Master bullet-hell combat and survive multi-phased boss fights to take down your targets. Evolve from a simple fighter into a true dreadnought as you hunt down the galaxy's most wanted!

lone.AI is a 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.

A top-down space survival roguelite. Harvest crystallized spacetime, build your arsenal from 40+ absurdly named weapons, and hold off increasingly hostile void entities until the universe runs out of things to throw at you. It usually doesn't.

Razor Squadron is a vertical arcade shoot 'em up set inside a colossal fleet war. Shift power between machine guns, lasers, and missiles, rescue wingmen in battle, switch formations on the fly, and push through the MAW's invasion.

Zip and zoom as you zap enemies and steal their stuff. Build progressively bigger, faster, tankier, more agile, more dangerous, more complicated, more projectile-y-ier ships in your goal to destroy and collect everything.

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.

This game is a Stupid Space Shooter. Control your ship to blow up the bad guys, they are red. Levelup to gain upgrades to fight more bad guys

Control the ball with gravity and smash through endless hordes! Collect weapons and skills, power up to the max, and survive the onslaught!

Defend Modulea! Dodge bullet hell, combine modules, and fight off waves of enemies with your custom-built space battleship in this roguelike action shooter!

Dodge and shoot your way through waves of enemies. REVO is a high speed, neon drenched space shoot ‘em up inspired by arcade classics of the 1980’s. Collect pickups, unlock powerful, ammo hungry weapons, and defeat giant bosses.

A top-down twin-stick shooter roguelite blending frenetic spaceship combat with deep base-building and tower defense. Fight through hostile territory, scavenge hardware, upgrade your ship, then build up your station to further empower your runs... as long as you can defend it. Godspeed, Commander.

Reality is collapsing into the Null, a digital void that consumes entire sectors of existence. As the last surviving pilot, you dive into corrupted space to fight through hostile anomalies, recover lost data, and uncover the force behind the collapse before everything is erased.