Top similar games like Space Mercenary Defense Force:
Space Mercenary Defense Force $4.99
Defend against the alien invasion and take down the mother ship! Utilise branching upgrade trees, unlock new ships, and equip permanent upgrades to create your own unique build and defeat the growing hordes of invaders in this sci-fi action roguelike!
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SSS222: HyperSpace$2.99
A fast-paced addicting space shooter with an inspiration taken from many modern games. A project I have been passionately working solo for 2 years+!

Star Hive: The Menace$0.99
This game is based on the neo mode of ''Galaxy Wars'' from 1995. Star Hive: The Menace, is the first in a franchise, there will be a sequel with three more games to continue the story. The objective is to use missiles stored on an Earth defense coalition freighter to destroy invading enemies.

Silent Sector$14.99
Oldschool action open-world sci-fi with a unique storyline, frenetic battles, crude humor, loose morals and cows.

Space Survivors$4.99
Annihilate hordes of enemies with devastating, unique, and powerful weapon upgrades! In Space Survivors, a survivor-like game with roguelite elements, every move could mean victory or death! head back to your station, hack cargo for pets and prepare for an even tougher run!

Cosmic Ray$2.99
A game about exploring space in search of hospitable planets for colonization. Casual gameplay and short rounds make it a great option for killing a few minutes.

RASHLANDER$3.99
A lunar lander roguelike that feels like spinning across an icy road and nailing a perfect parallel park. Slingshot from landing pads to fuel platforms, avoid interstellar debris, discover a dense network of game-changing upgrades, and top the leaderboard in this physics-loaded ode-to-arcades.

Bubble Battle Blast 3D$4.99
Bubble Battle Blast 3D is a retro arcade third-person shooter in which a spaceship battles its way through 8 arenas in which a guard drone protects bubbles. Earn ship-enhancing items and temporary power-ups by blasting bubbles with lasers, Earn bonus points after each arena to upgrade faster.

Rocket!$9.99
Build a stronger ship with each play session as you earn resources needed to upgrade your ship and apply stronger weapons. Customize your ship to your play style and tackle greater and stronger enemies as the levels continue in this endless roguelite.

Chronicle: Unit Eight$14.99
Experience intense arcade-style shooter with bullet hell mechanics and rogue-like elements. Use destructible bullets to defeat waves of enemies and bosses. Can you emerge victorious in this thrilling challenge and take down the Space Pirate?

ROIDERS$4.99
Become an asteroid miner and loot your way to supremacy! Fight waves of vicious aliens or battle against your friends.

SKY TOMB$2.99
Have you ever looked at a boss and felt "Damn, I wish I - the player - was that powerful." Look no further than the retro-styled dopamine-fueled time-deleting powertrip of SKY TOMB!

Super Smash Asteroids$4.99
"Super Smash Asteroids" is a high-speed, twin-stick, top-down, rogue-like space shooter. Choose from 6 unique ships, upgrade with 70+ items & blast through epic bosses. Level up for intense, action-packed battles in a futuristic universe. Buckle up for a thrilling journey to glory!

Star Survivor$4.99
Star Survivor is a space-themed survival game that blends intense deckbuilding strategy. Pilot humanity's last spaceship through the vast galaxy, Unlock powerful weapon combos, collect card modules, and craft unique builds. As the enemy swarms grow denser, will you be the last one standing?

Space War: Infinity$1.99
A semi-procedural shoot-'em-up that will test your skills. Level up your ship, unlock amazing weapons, and defeat 5 formidable bosses. Challenge the infinite by facing real-time waves of enemies after completing all missions. Become the intergalactic hero now!

Survive the Rift$14.99
Survive the Rift is a rogue-lite shoot 'em up with procedurally generated levels, unlockable ships, and plenty of items to make each run unique. Inspired by classic 16-bit era scrolling shooters with modern rogue-lite game mechanics.

Steredenn: Binary Stars$12.99
Steredenn is a frenetic and chaotic space shooter, carved in big beautiful pixels, with insane boss battles. Embark in your ship and engage the fight against dreadful space pirates in a never-ending combat for your survival.

WarspaceFREE
Warspace is a arcade space shooter game.

REPLIKATOR$11.99
In this twin stick roguelite shooter, you play as one of the galactic mercenaries, explore a mysterious scientific complex and uncover the secret of the REPLIKATOR project.

BroodStar$10.99
BroodStar is a classic arcade shmup with roguelike elements. Acquire crazy item combos, encounter strange events and fight challenging bosses on a quest to destroy the living planet, the BroodStar.

Space Escape$2.99
A rogue-like arcade shoot-'em-up.

#Funtime$14.99
#Funtime is an explosive twin-stick shooter where shooting isn't your only weapon. Swap your ship's color to destroy enemies, avoid damage, and ultimately control the battlefield.

Vektor Z$6.99
Vektor Z brings fast and furious retro space blasting action to Steam! Blast your way through endless waves of asteroids and enemies to write your name among the stars! Vektor Z offers a rogue-like arcade action game where you'll improve your progress every time you play!

DeliSpace$9.99
Deliver packages... in space! Test your agility by navigating through different galaxies carrying diverse packages and upgrade your ship. Will you become the best courier in the universe?

Edge Of Galaxy$4.99
Edge of Galaxy is a real-time tactical space sim with RPG-lite elements. As the commander of a mercenary fleet, you must hire and manage your ships, upgrade their capabilities, and rise through the ranks to become a legend among mercs.

Star of Providence$14.99
Star of Providence is a top down action shooter with procedurally generated elements. Explore a large, abandoned facility in search of incredible power, fighting dangerous foes and gaining new weapons and upgrades as you progress.

Nova Drift$17.99
Nova Drift distills the mechanical depth and strategy of an ARPG into classic arcade space combat. Control an endlessly evolving bio-mechanical ship, face legions of strange and deadly foes, and ride the wake of a dying star across the void.

CONTINGENCYFREE
Surviving is the least of your worries. After your cargo ship crashes on a foreign planet, not only will you have to find a way to eat, you'll have to survive the terrors of your fear and stress. Roguelite platforming gameplay will keep you frequently choosing weapon and suit upgrades to best defeat your many demons.

Far Flight$4.99
Far Flight is a rogue-lite top-down space shooter where you shape your own way to shoot all the bad guys.

ionAXXIA$7.99
ionAXXIA introduces the ‘big brained shooter’ genre with a tactical arcade space shooter. Classic 90's inspired sci-fi action adds a whiff of Dark Souls to its varied-weaponry combat, pairing a need for quick reactions and gaming skills with patience, timing, and smart decision.

Asteroids... But Roguelite$4.99
Start off as a weak ship with a simple attack and fight through waves of enemies, earning currency in order to purchase upgrades for your ship. The never ending waves of enemies grow in number, power, and variety as you progress. Purchase upgrades to keep pace with them.

Space Ship Infinity$0.99
Returning to the classic style of spaceship games in pixel art. Survive in space as many enemy ships and anything else that can destroy your ship, get all the advantages and improvements available to get your best score.

Andromeda Survivors$2.99
Defeat thousands of enemies that are invading Andromeda! Andromeda Survivors is a casual game with rogue-lite elements where you collect skills and upgrades for your ship to create amazing builds!

Void Vikings$4.99
Void Vikings is an arcade style top down space shooter where intense action is the focus and choosing the right education could pay off. Smartly manage your Space Bucks in order to destroy your student loans before you die. If you succeed your score could sing your praises through all of Valhalla.

War in Space$1.99
War in Space is a retro style arcade shooter where you battle waves of unrelenting enemy ships with a whopping 81 levels and over 50 technologies available in the tech tree to keep you challenged right until the final wave.

Asteroids Millennium$7.99
A modern spin on an old classic! Asteroids Millennium provides exciting new game play without departing from the feel of its predecessors. Collect power-ups, dodge threats, and blast away at asteroids and enemies alike in this survival game that is truly fun to play.

Power of Ten$11.99
Fly a star-fighter against a bloodthirsty armada. Gather weapons, resources, and upgrades to help you push back the relentless assault while protecting the galaxies' civilians!

PERMUTER$3.99
PERMUTER is a synthwave-style autobattler inspired by Geometry Wars 3's Pacifism mode. Control an agile ship, weave through enemies, buy and stack game-changing upgrades, choose your build carefully to gain synergy bonuses, and defeat the challenging elite bosses.

Cycle 28$3.99
Cycle 28 is a classic arcade space combat game where you have six minutes to beat your high-score. Simple controls, powerful upgrades, and intense dogfights. Perfect for when you just need to switch off and shoot something. See you on the scoreboard!

D.A.R - Deadly Alien Rogues$4.99
DAR is an arcade-style single-screen shoot-em-up inspired by the classics, with some modern rogue-like twists! Pick your character, plot a course through the galaxy, grab upgrades and destroy the enemy! The ultimate goal? Saving the galaxy! Or just getting a really, really high score - your call.

Roguelands$9.99
Embark on an epic journey in this hardcore Multiplayer RPG! As a Galactic Cadet, you and your Combat Squad of friends must brave hostile worlds in search of valuable loot and resources. Craft powerful gear, slay otherworldly creatures, and save the galaxy.

Vortex Attack EX$9.99
Galaxy is in danger with hostile ships swarming from the opening vortex. Blast enemies with huge variety of upgradeable ships. Frantic arcade shooter featuring world leaderboards and fun multiplayer mode will keep you playing until all ships are unlocked; galaxies saved. WARNING:VERY_ADDICTIVE

Devastation - Annihilate the Alien Race$2.99
Devastation - Annihilate the Alien Race, is a 2D, dual stick shoot em' up, bullet hell, arcade game. Tear up hordes of aliens with skill based game play, bombs & upgrades to obliterate everything!. Gun down 11 massive bosses, bank insane score on the leaderboards & overcome clouds of enemy fire.

Void Reaper$3.99
Pilot your ship through the Void in 'Void Reaper'. Face diverse enemies, upgrade your ship, and battle bosses to reach the End Boss in this action-packed void odyssey. Can you destroy the Void and save the world?

A Blast From The Past$5.99
A Blast from the Past is a stunning, classic arcade shooter. Includes gameplay modes for the casual gamer through to "Tournament Mode" for Hi-Score hunters! With 4K/360Hz+ support, experience smooth as silk gameplay in this dazzling arcade blaster with something for every arcade-going fan!

Fusillade$3.99
Use your infinite deck of cards in real time to push back the never ending waves of pirates. Fly through a Roguelike, Deck-Building, Space Shoot em' up, and Destroy the Cosmos with unparalleled firepower, ingenuity, and a little bit of luck!

Escape the Kreegan$4.99
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!

Redshift$3.99
Craft and upgrade the ultimate ship and survive an onslaught of enemies in this top down, rogue-lite shooter.

Space Killer$7.99
Take on the role of a spaceship pilot and protect the universe from an alien invasion. Destroy hordes of infected ships and defeat powerful bosses. Unlock new ships, create your own builds in this Roguelite, Survivors, RPG game🚀

Mission Andromeda$1.99
Escape from Earth! Navigate procedurally generated levels using your trusty Jetpack and Laser rifle, gather precious Ores to trade and Biomass to fuel your ship "Mole-1" on it's way to the final destination, Andromeda!

---Red---Tether-->$12.99
---Red---Tether--> is an action-packed “combat-puzzle” roguelite. You will tear apart massive space fleets, using nothing but your advanced tether harpoons. Pull and crash ships into another, rip their components off, then grapple-swing your way out of danger.

RymdResa$11.99
A relaxed roguelike space odyssey in a procedurally generated universe! Travel through a lonely and mysterious cosmos. Customize your ship, explore and survive!