Top similar games like Space Mercenary Defense Force:

A fast-paced, intense top-down bullet hell action experience with a sci-fi aesthetic. As a protector of light, you must build your arsenal of weapons, abilities, reflexes, and wits as you slowly transform into an unstoppable force to survive through waves of monsters and demons from the void.

Battle increasingly deadly hordes in an action-packed survivors-like with tower defense elements. Create unique builds, unlock and place towers, upgrade your character, and fight to defend the Kingdom of Stellara.

Mow down thousands of night creatures and survive until dawn! Vampire Survivors is a gothic horror casual game with rogue-lite elements, where your choices can allow you to quickly snowball against the hundreds of monsters that get thrown at you. Be the bullet hell!

A micro horde-survival roguelike where time only moves when you do! Level up, choose your skills and slaughter thousands of monsters. Jump in the monster-slaying arena and piece together your collection of gear, characters, and stages to become the ultimate survivor!

Cards and Guns is a top-down arena shooter roguelite, where you’ll have to defeat hordes of creatures. Choose from a variety of cards and upgrades to create unique builds and survive to the end.

Stranded in Starlight is a top-down roguelite where you pilot a spaceship armed with a variety of unique weapons and utilities. Battle relentless enemy hordes and powerful bosses as you upgrade your ship, adapting to each challenge in an ever-changing fight for survival.

Fight off hordes of enemies, slay Bosses, choose from a variety of upgrades and combine your spells to create unique and game-breaking builds In this auto-attacking roguelite.

Fight against waves of enemies to become the ultimate space survivor. Arcade Space Survivor is an arcade-styled action-roguelike. The game offers an innovative and unique experience within the survivors-like genre.

An experience unlike any other! Forget the single screen and play in a chaos of simultaneous windows. You and the enemies move between these isolated environments, which you can drag around. Shoot, dodge, upgrade your ship and create the perfect build in this Roguelike Bullet Hell!

Starship Architect is a high-octane roguelike where every decision counts. Battle relentless enemies, choose from a dynamic arsenal of weapons and upgrades, and strategically assemble your ship. Unlock powerful new parts after each run and craft the perfect starship.

Gear up your GunSuit and defend Earth from an alien siege! Equip and upgrade unique arsenals of overpowered weapons to survive overwhelming numbers in this action-roguelite twin-stick horde survival.

A fast-paced space shooter where you blast through waves of Martian invaders, upgrade your ship, dodge bullet hell, and wipe them out with devastating firepower.

Shatter endless enemy waves from the baseline, rake in gold and XP, level up and draft modules and ball upgrades to forge absurd builds, then hold the line as bosses widen the arena and the grid fights back!

Choose your race and class, create a unique build, and battle relentless hordes in VERAKORIA. Collect experience, unlock powerful upgrades, defeat deadly bosses, and survive the escalating onslaught in this pixel-art action roguelite.

Set sail into cursed seas and beyond in this pirate ship battling action roguelite! Unlock ships, recruit captains, and survive battles against monsters, war fleets, and things best left unnamed... for copyright reasons argh.

A bullet heaven with a terminal aesthetic, set in a world ruled by rhythm. Face endless hordes, learn each level's patterns, install upgrades on your pilot and survive the beat.

STARSHRED is a fast-paced, top-down action roguelike set in space. Shred the invaders, choose between powerful upgrades to create unique combinations, and survive boss battles that turn into bullet hell. Grow stronger with every run and destroy the threat invading the planet.

Pixel Descent is an action rogue-lite in which you navigate a series of complex dungeons packed to the brim with monsters that want you dead. Sign the contract and descend into the deepest depths of the abyss knowing full well that you will definitely die there, it's just a matter of when.

Blast hordes of alien ships into junk. Collect the scrap to upgrade your ship into an unstoppable force of destruction. Destroy bosses to choose new weapons to bolt on your ship.

Mighty Mage is a top-down arena shooter rogue-lite where you play a cute mage wielding up to 5 elemental spells at a time to fight off hordes of enemies. Choose from a variety of upgrades and spells to create unique builds.

Combat endless waves of spaceships as Cosmos Kitten in this physics-based action roguelite! Unlock combinations of unique characters with powerful weapons to overcome the onslaught of enemies. Compete or cooperate with friends in optional local multiplayer mode.

A cosmic survivors-like where every upgrade brings you closer to becoming a living superweapon. Burn through alien hordes, rupture pocket dimensions, escape black holes, and survive the cosmic war for the Moon.

Kill monsters, Gather paws, then you will be stronger and stronger! Purrfect Survivors is a roguelite game, which you need to get runes and arrange them against the thousands of monsters. Every rune has its own ability and it shows completely different ability depending on where you arrange it.

The farm is under attack! Fight against an alien invasion as Hamdy, an armed scarecrow. In this top-down arena roguelike, build your loadout with up to 6 weapons, grow stronger after each wave, and survive until the very end.

Dustbound is a deckbuilding survivors-like roguelite where you build your deck by finding lost treasure. Between waves of monsters take time to upgrade your cards and shape your character’s build—then dive back into the fight.

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!

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.

Irradiant Skies is an arcade roguelite blending brick-breaking and bullet-parrying combat. Reflect enemy attacks, chain powerful upgrades, and master unique ships as you ascend through waves of enemies.

Survive the zombie hordes! Last Agent is an action-packed survival game set in a world crawling with dark creatures. Strengthen yourself through choices, rain bullets on your enemies, and take down colossal bosses!

Defend the galaxy from endless cosmic horrors. Dash and blast with fast, burst-based piloting, unleash powerful overdrives, evolve your ship with each unique run, and push your skills to the limit.

La Furia de las Trenzas is a survivor-like roguelite where you'll face relentless hordes of British soldiers trying to capture Buenos Aires. Recruit your platoon of soldiers with special abilities and defend the town square! 

A 2D retro action rogue-like game inspired by the original Space Invaders arcade experience. Shoot down incoming alien waves and upgrade your turret. Discover and defeat bosses, and unlock permanent upgrades, turret classes, and challenging difficulty modifiers!

Dodge asteroids attracted to your gravitational pull and use the profits generated from their collisions to unlock a variety of different spaceships with different abilities. Reach for High Scores to unlock unique skins for each ship.