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!

Assemble a limitless arsenal in this survive-em-up roguelite shooter. As a Gun Manufacturer's testing force, your mission is simple: test the latest gun tech and scavenge alien planets. Collect insane weapon parts to invent crazy guns that slay thousands. You may not survive, but your guns will!

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.

Brew your own weapons from scratch and unleash them on hordes of homunculi! In this survival roguelite, every ingredient combination creates a potion that splashes, moves, and reacts in a unique way. Discover absurd synergies and rescue fellow alchemists in your quest for the Philosopher’s Stone.

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.

Fight hordes of Covenant & Flood in this new game mixing Roguelite & Bullet Heaven for hours of mindless fun!

Amass an army of undead to fight endless waves of heroes intent to end your boneraising ways! In this gothic auto-battler rogue-lite Survivor-like, use the bones of slain heroes to raise your minions, collect relics and spells, and unlock meta upgrades, all to survive King Gigald's crusade!

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.

RANDOBOUNCE is a fast-paced, arcade, score-attack roguelike where you bounce uncontrollably while crafting the most ridiculous, overpowered weapon possible. Survive, rack up points, and let the chaos unfold!

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.

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.

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!

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!

You are God. The king’s five daughters have been taken. Fight thousands of enemies, unlock powerful skills, and crush the evil wizard Zaharad in this brutal 2.5D roguelike!

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! 

Vanquish the ever-growing hordes, Command your army, grow in strength and numbers, and conquer your enemy's castles in this casual top-down roguelite.

Deploy your turrets and defend against an ever-growing mechanical horde! Upgrade your turrets separately in unique ways, use unique character abilities, and create powerful synergies.

Embark on an retro adventure of ever-changing challenges. Adapt to unique ships, dodge bullets, blast enemies, and shape-shift your way to victory. Get ready for non-stop excitement and pure arcade fun!

Unleash divine fury in this Ancient Greek twist on the Vampire Survivors formula! Play as one of 16 mighty gods, each with unique powers, battle endless waves of mythological creatures and legendary bosses. From harpies to hydras, can you survive?

Viking Survivors is an action roguelite where you wield ancient weapons and unleash Norse fury on endless waves of monsters. Survive the bullet hell, collect mythic weapons, and prove you're the ultimate Viking warrior in this thrilling survival game.

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.

Overspelled is a top-down survival rougelite where you play as a wizard gathering arrays of spells to fight hordes of monsters. Summon allies, cast curses and annihilate enemies with magic you are probably unable to wield... or are you?