IMHO.

Single-player games like The Quantum Conflict

Below are 11 single-player Steam games similar to The Quantum Conflict, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.

Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like The Quantum Conflict page.

Ranked picks

  1. 1
    Orbit Outlaws — Steam game cover

    Orbit Outlaws

    Single-player alternative to The Quantum Conflict — playable solo, no multiplayer required. Shares Action with The Quantum Conflict.

    Orbit Outlaws is the definitive physics-based arena combat game. Use gravity to pull off impossible shots in competitive and casual multiplayer. Choose your gun, chassis, and pilot, then upgrade and optimize your loadout as you progress against rival pilots.

    2020ActionIndieEarly Access9.99 USDSingle-playerSimilar games →
  2. 2
    TACTICAL BANDITS — Steam game cover

    TACTICAL BANDITS

    Single-player alternative to The Quantum Conflict — playable solo, no multiplayer required. Shares Action with The Quantum Conflict.

    Dive headfirst into the chaos of a ravaged world, where survival means mastering the art of combat and outsmarting your foes. In this hardcore arcade action game, TACTICAL BANDITS, the remnants of civilization teeter on the brink, and it's up to you to chart a path through the desolation.

    2024ActionIndieCasual11.99 USDSingle-playerSimilar games →
  3. 3
    DODECIUM — Steam game cover

    DODECIUM

    Single-player alternative to The Quantum Conflict — playable solo, no multiplayer required. Shares Action with The Quantum Conflict.

    Solo Indie delivers a local 1-4 player split-screen physics-based create and combat sandbox with scientific tools for PvP or PvE. Replay many unique campaigns. Master your hex build strategy, microscopes, and chemistry skills. Be clever to achieve victory and learn as you go. June NEXT FEST.

    2026ActionStrategyIndieSingle-playerSimilar games →
  4. 4
    Galacide — Steam game cover

    Galacide

    Single-player alternative to The Quantum Conflict — playable solo, no multiplayer required. Shares Action with The Quantum Conflict.

    Command destructive spaceships to obliterate hordes of enemy vessels, while quickly solving puzzles to weave through networks of vibrantly colorful, adversarial machines!

    2015ActionIndie9.99 USDSingle-playerSimilar games →
  5. 5
    Cobalt — Steam game cover

    Cobalt

    Single-player alternative to The Quantum Conflict — playable solo, no multiplayer required. Shares Action with The Quantum Conflict.

    Forget everything you’ve learned about combat. Cobalt’s slo-mo mechanic lets you perform moves that other games can’t comprehend. Discover the secrets of a distant colony in a cosmic campaign, take on challenges and rule the leaderboards, or face off against others in local and online multiplayer.

    2016ActionIndieAdventure14.99 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Hyperdrive Massacre — Steam game cover

    Hyperdrive Massacre

    Single-player alternative to The Quantum Conflict — playable solo, no multiplayer required. Shares Action with The Quantum Conflict.

    Hyperdrive Massacre is an 80s inspired arcade fragfest in Spacewar sauce designed around local multiplayer, focused on kinestetics, tactical and shooting skills at a frenzied pace.

    2015ActionIndieCasual9.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Dome Keeper — Steam game cover

    Dome Keeper

    Single-player alternative to The Quantum Conflict — playable solo, no multiplayer required. Shares Action with The Quantum Conflict.

    Defend against waves of alien monsters in this unique roguelike action miner. Dig for resources, collect useful gadgets, and upgrade equipment to increase odds of survival – just hurry back before your dome is destroyed!

    2022ActionIndieAdventure17.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Assault Android Cactus+ — Steam game cover

    Assault Android Cactus+

    Single-player alternative to The Quantum Conflict — playable solo, no multiplayer required. Shares Action with The Quantum Conflict.

    Assault Android Cactus is an intense arcade style twin stick shooter - pick from one of nine unique synthetic heroines and blast your way through overwhelming robots hordes to save the ship from its own workforce. Supports single player and local co-op game modes.

    2015ActionIndie19.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    Super vs. World — Steam game cover

    Super vs. World

    Single-player alternative to The Quantum Conflict — playable solo, no multiplayer required. Shares Action with The Quantum Conflict.

    Super vs. World is a local multiplayer 2D versus Party Game that lets you, and up to 7 other players (8 in total), compete in a variety of gaming modes from Last Man Standing, King of the Hill, and Capture the Flag, plus more! Grab your controller and have some fun with friends and family!

    2020ActionIndieMassively Multiplayer9.99 USDSingle-playerSimilar games →
  10. 10
    Pirates! Showdown: Enhanced Edition — Steam game cover

    Pirates! Showdown: Enhanced Edition

    Single-player alternative to The Quantum Conflict — playable solo, no multiplayer required.

    A fast-paced game combining real-time strategy and defense tactics. Face off against the fearsome Red Hand privateers in thrilling head-to-head pirate battles on the high sea! Capture towns, guard towers, and much more to strengthen your defense, buff up your ships, and increase your gold supply!

    2024StrategyEarly Access9.99 USDSingle-playerSimilar games →
  11. 11
    Cozy Holes — Steam game cover

    Cozy Holes

    Single-player alternative to The Quantum Conflict — playable solo, no multiplayer required.

    Cozy Holes is a relaxing digging adventure with no enemies, no pressure, and a story-rich world to explore. Play as Digby, a magical shovel, and shape the island at your own pace as you uncover ancient carvings and reunite with your lost tribe beneath a tropical paradise.

    2026IndieAdventureCasual9.99 USDSingle-playerSimilar games →