IMHO.

Games like Space Mercenary Defense Force

If Space Mercenary Defense Force is your kind of game, the closest matches are Space Grunts, Vampire Survivors and Hive Jump 2: Survivors — picked from the ranked list below. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.

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About Space Mercenary Defense Force: 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!

2023ActionIndieRPGCasual4.99 USDWindows · Linuxby Tom Paradise
Space Mercenary Defense Force — Steam game cover

Players who liked Space Mercenary Defense Force also play

Steam players who put hours into Space Mercenary Defense Force also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.

  1. Space Grunts

    WHY THIS

    Top pick for Space Mercenary Defense Force fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Space Mercenary Defense Force.

    A turn-based game on a planet outpost - with no waiting between turns! Play it at the speed of an arcade game, or take your time and think about your next step.. no matter how fast you take your turn, it might be your last!

    2016ActionStrategyIndie9.99 USDDeck PlayableSteam ↗
  2. Vampire Survivors

    WHY THIS

    Second-strongest match for Space Mercenary Defense Force fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Space Mercenary Defense Force.

    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!

    2022ActionIndieRPG4.99 USDDeck VerifiedSteam ↗
  3. Hive Jump 2: Survivors

    WHY THIS

    Third-strongest match for Space Mercenary Defense Force fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Space Mercenary Defense Force.

    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.

    2024ActionIndieRPG6.99 USDDeck VerifiedSteam ↗
  4. Fission Superstar X

    WHY THIS

    Ranked #4 for Space Mercenary Defense Force fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Space Mercenary Defense Force.

    Blast off in Dr. Leopold's bomber in this relentless rogue-lite shooter. Tour the solar system on a desperate randomly generated bomb run. Face impossible odds trying to achieve the demented dream of an insane scientist.

    2019ActionIndieRPGDeck VerifiedSteam ↗
  5. Boneraiser Minions

    WHY THIS

    Ranked #5 for Space Mercenary Defense Force fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Space Mercenary Defense Force.

    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!

    2023ActionIndieRPG4.99 USDDeck VerifiedSteam ↗
  6. Overture

    WHY THIS

    Ranked #6 for Space Mercenary Defense Force fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Space Mercenary Defense Force.

    Overture is an action-adventure roguelike which draws heavy inspiration from hits such as Diablo, Realm of The Mad God, Zelda, and The Binding of Isaac. Explore vast randomly generated dungeons and slay hordes of cunning enemies!

    2015ActionStrategyIndie4.99 USDDeck PlayableSteam ↗
  7. Legend of Dungeon

    WHY THIS

    Ranked #7 for Space Mercenary Defense Force fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Space Mercenary Defense Force.

    Legend of Dungeon is a randomly generated action RPG Beat'em'up with heavy Rogue-like elements, striking visuals, and dynamic music.

    2013ActionIndieRPG9.99 USDDeck PlayableSteam ↗
  8. Void Scrappers

    WHY THIS

    Ranked #8 for Space Mercenary Defense Force fans by collaborative filtering across millions of Steam libraries. Shares Action with Space Mercenary Defense Force.

    Blast hordes of alien ships into junk. Collect the scrap to upgrade your ship into an unstoppable force of destruction. Unlock new characters and weapons and upgrade your stats between runs.

    2022Action3.99 USDDeck VerifiedSteam ↗

Cheaper alternatives

Games in the same vein priced at least 40% below Space Mercenary Defense Force at current Steam store prices.

  1. POSTAL 2

    WHY THIS

    Priced ~80% under Space Mercenary Defense Force on Steam right now. Shares Action and Indie with Space Mercenary Defense Force.

    Live a week in the life of "The POSTAL Dude"; a hapless everyman just trying to check off some chores. Buying milk, returning an overdue library book, getting Gary Coleman's autograph, what could possibly go wrong?

    2012ActionIndieAdventure0.99 USDDeck VerifiedSteam ↗
  2. The Test

    WHY THIS

    Priced ~60% under Space Mercenary Defense Force on Steam right now. Shares Indie and RPG with Space Mercenary Defense Force.

    You will answer a series of questions that will reveal truths from deep within. These questions may make you uncomfortable, but with great knowledge comes great sacrifice. Can you make it all the way through The Test, and if you do, are you sure you want the answers you seek?

    2020IndieAdventureSimulation1.99 USDDeck VerifiedSteam ↗
  3. Milk inside a bag of milk inside a bag of milk

    WHY THIS

    Priced ~70% under Space Mercenary Defense Force on Steam right now. Shares Indie with Space Mercenary Defense Force.

    A short story about what sort of challenges everyday little things can be. Help the girl buy milk, be the first not to disappoint her.

    2020IndieAdventure1.49 USDDeck PlayableSteam ↗
  4. Blood and Bacon

    WHY THIS

    Priced ~80% under Space Mercenary Defense Force on Steam right now. Shares Action and Casual with Space Mercenary Defense Force.

    This Co-op Shooter , has Day and Night levels, multiple maps, players will take on 25 enemy types and numerous bosses, like Gargantuan Monsters and Minibosses every 10 days as you explore, shoot and run for your life against the onslaught of porcine monstrosities.

    2016ActionAdventureCasual0.99 USDSteam ↗
  5. Placid Plastic Duck Simulator

    WHY THIS

    Priced ~60% under Space Mercenary Defense Force on Steam right now. Shares Casual with Space Mercenary Defense Force.

    The ultimate high-tech rubber duck simulation, Placid Plastic Duck brings you dangerous levels of relaxation. With chill music, dreamy 3D graphics, and many different happy ducks, your only priority is to float around. Zero Ducks given.

    2022SimulationCasual1.99 USDDeck VerifiedSteam ↗
  6. Peggle Deluxe

    WHY THIS

    Priced ~80% under Space Mercenary Defense Force on Steam right now. Shares Casual with Space Mercenary Defense Force.

    Take your best shot with energizing arcade fun! Aim, shoot, clear the orange pegs, then sit back and cheer as 10 whimsical teachers guide you to Peggle greatness.

    2007Casual0.99 USDDeck PlayableSteam ↗
  7. STAR WARS™ Republic Commando™

    WHY THIS

    Priced ~50% under Space Mercenary Defense Force on Steam right now. Shares Action with Space Mercenary Defense Force.

    You are the leader of an elite squad of Republic Commandos, your mission is to infiltrate, dominate, and ultimately, annihilate the enemy. Your squad will follow your orders and your lead, working together as a team - instinctively, intelligently, instantly. You are their leader. They are your weapon.

    2009Action2.49 USDDeck PlayableSteam ↗
  8. shapez

    WHY THIS

    Priced ~80% under Space Mercenary Defense Force on Steam right now. Shares Indie and Casual with Space Mercenary Defense Force.

    shapez is an easy-going, minimalistic factory building game about the automation of shapes through extraction and satisfying production lines. Adapt to increasingly complex shapes and grow your factory across an infinitely expanding map. Your only limitation is your creativity!

    2020StrategyIndieSimulation0.99 USDDeck PlayableSteam ↗

Free alternatives

Free-to-play games that recommended players of this title also tend to enjoy.

  1. Life is Strange - Episode 1

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Space Mercenary Defense Force.

    Episode 1 now FREE! Life is Strange is an award-winning and critically acclaimed episodic adventure game that allows the player to rewind time and affect the past, present and future.

    2015ActionAdventureFreeDeck PlayableSteam ↗
  2. Bongo Cat

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Space Mercenary Defense Force.

    Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?

    2025IndieSimulationMassively MultiplayerFreeDeck PlayableSteam ↗
  3. Indigo Park: Chapter 1

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Space Mercenary Defense Force.

    Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.

    2024ActionIndieAdventureFreeDeck PlayableSteam ↗
  4. STRAFTAT

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Space Mercenary Defense Force.

    STRAFTAT is a 1v1/2v2 ONLINE first person SHOOTER with quick rounds in over 350 MAPS ; Including all WEAPONS, proximity chat and 4 players FFA.

    2024ActionFreeDeck PlayableSteam ↗
  5. NGU IDLE

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Space Mercenary Defense Force.

    NGU Idle is a Free To Play Idle game that's full of weird humor, tons of upgrades and hundreds of hours of content! Try out NGU Idle today and experience the joy of Numbers Going Up!

    2019IndieAdventureSimulationFreeDeck PlayableSteam ↗
  6. Awaria

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Space Mercenary Defense Force.

    Awaria is a short game about working in haunted maintenance tunnels.

    2024ActionIndieFree To PlayFreeDeck PlayableSteam ↗
  7. Travellin Cats in Paris

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Casual with Space Mercenary Defense Force.

    Find 100 cats hidden in Paris, France in this cute hand-drawn hidden object game by Travellin Cats - the original viral hidden cat game creator!

    2023IndieFree To PlayCasualFreeDeck VerifiedSteam ↗
  8. Grimm's Hollow

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and RPG with Space Mercenary Defense Force.

    A spooky, freeware RPG where you search the afterlife for your brother. Reap ghosts with your scythe, explore haunted caves, and eat ghostly treats on your journey through death.

    2019IndieAdventureRPGFreeDeck PlayableSteam ↗

Plays great on Steam Deck

Valve-Verified or Playable picks from the similar pool — ready to go on Deck out of the box.

  1. Vampire Survivors

    WHY THIS

    Deck Verified — runs on Steam Deck out of the box. Shares Action and Indie with Space Mercenary Defense Force.

    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!

    2022ActionIndieRPG4.99 USDDeck VerifiedSteam ↗
  2. Hive Jump 2: Survivors

    WHY THIS

    Deck Verified — runs on Steam Deck out of the box. Shares Action and Indie with Space Mercenary Defense Force.

    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.

    2024ActionIndieRPG6.99 USDDeck VerifiedSteam ↗
  3. Fission Superstar X

    WHY THIS

    Deck Verified — runs on Steam Deck out of the box. Shares Action and Indie with Space Mercenary Defense Force.

    Blast off in Dr. Leopold's bomber in this relentless rogue-lite shooter. Tour the solar system on a desperate randomly generated bomb run. Face impossible odds trying to achieve the demented dream of an insane scientist.

    2019ActionIndieRPGDeck VerifiedSteam ↗
  4. Boneraiser Minions

    WHY THIS

    Deck Verified — runs on Steam Deck out of the box. Shares Action and Indie with Space Mercenary Defense Force.

    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!

    2023ActionIndieRPG4.99 USDDeck VerifiedSteam ↗
  5. Void Scrappers

    WHY THIS

    Deck Verified — runs on Steam Deck out of the box. Shares Action with Space Mercenary Defense Force.

    Blast hordes of alien ships into junk. Collect the scrap to upgrade your ship into an unstoppable force of destruction. Unlock new characters and weapons and upgrade your stats between runs.

    2022Action3.99 USDDeck VerifiedSteam ↗

Frequently asked about Space Mercenary Defense Force

How much does Space Mercenary Defense Force cost?
Space Mercenary Defense Force is listed on Steam at 4.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to Space Mercenary Defense Force?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Space Mercenary Defense Force are Space Grunts, Vampire Survivors, Hive Jump 2: Survivors.
Who developed Space Mercenary Defense Force?
Space Mercenary Defense Force was developed by Tom Paradise.

imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Space Mercenary Defense Force.

For library-aware picks tuned to your specific taste, sign in with Steam on the home page.

29 Games Like Space Mercenary Defense Force (2026) · imho.run