IMHO.

Single-player games like The Tomorrow War

Below are 10 single-player Steam games similar to The Tomorrow War, 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 Tomorrow War page.

Ranked picks

  1. 1
    Parkan 2 — Steam game cover

    Parkan 2

    Single-player alternative to The Tomorrow War — playable solo, no multiplayer required. Shares Action and Adventure with The Tomorrow War.

    Parkan II is an original concept game that will allow you to feel as a pilot of a spacecraft lost somewhere in the universe. Become a pirate or mercenary, get money to buy the most powerful cruiser and show them all who is to be the new master of the galaxy. Unforgettable adventures in the Parkan II universe await you!

    2014ActionAdventureSimulation3.99 USDSingle-playerSimilar games →
  2. 2
    Elite Dangerous — Steam game cover

    Elite Dangerous

    Single-player alternative to The Tomorrow War — playable solo, no multiplayer required. Shares Action and Adventure with The Tomorrow War.

    Take control of your own starship and blaze your trail in an ever-changing galaxy. Master the arts of combat, mining and trade or venture out into the unknown across a 1:1 scale universe.

    2015ActionStrategyAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  3. 3
    Rebel Galaxy — Steam game cover

    Rebel Galaxy

    Single-player alternative to The Tomorrow War — playable solo, no multiplayer required. Shares Action and Adventure with The Tomorrow War.

    Rebel Galaxy is a swashbuckling space adventure, with action-packed combat, exploration, discovery, trade, and “negotiation” with the outlandish denizens at the edge of the known universe.

    2015ActionIndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Objects in Space — Steam game cover

    Objects in Space

    Single-player alternative to The Tomorrow War — playable solo, no multiplayer required. Shares Action and Adventure with The Tomorrow War.

    Objects in Space is a retro space game centred on 2D point-and-click stealth action in a massive open world. Players have their own customisable ships and can meet people, become a trader, bounty hunter, explorer, scavenger or all of them at once.

    2019ActionStrategyIndie24.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Rebel Galaxy Outlaw — Steam game cover

    Rebel Galaxy Outlaw

    Single-player alternative to The Tomorrow War — playable solo, no multiplayer required. Shares Action and Adventure with The Tomorrow War.

    Out of cash, out of luck, out on the fringe. Juno Markev has a killer to tail, a debt to pay, and more trouble headed her way. Rebel Galaxy Outlaw takes place in a greasy, blue-collar world of outlaws, truckers, cops and thieves.

    2020ActionIndieAdventure29.99 USDSingle-playerSimilar games →
  6. 6
    Space Rangers HD: A War Apart — Steam game cover

    Space Rangers HD: A War Apart

    Single-player alternative to The Tomorrow War — playable solo, no multiplayer required. Shares Action and Adventure with The Tomorrow War.

    Space adventure, open world RPG, strategy, arcade, quest and more!

    2013ActionStrategyAdventure14.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Starship EVO — Steam game cover

    Starship EVO

    Single-player alternative to The Tomorrow War — playable solo, no multiplayer required. Shares Action and Adventure with The Tomorrow War.

    Mine and craft your way to orbit, build your own starship and explore a vast, dangerous galaxy alongside your crew. For players who love a meaningful survival progression, a unique and elegant building system, and epic space-opera scale.

    2020ActionIndieAdventure24.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Celestial Command — Steam game cover

    Celestial Command

    Single-player alternative to The Tomorrow War — playable solo, no multiplayer required. Shares Action and Adventure with The Tomorrow War.

    Mine asteroids, salvage space debris, design your own small or massive spacecraft using individual functional components, complete missions, and engage in battles against enemies in a vast galaxy with realistic physics based on orbital mechanics or in a classic physics mode.

    2014ActionStrategyIndie19.99 USDSingle-playerSimilar games →
  9. 9
    Mass Effect (2007) — Steam game cover

    Mass Effect (2007)

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

    As Commander Shepard, you lead an elite squad on a heroic, action-packed adventure throughout the galaxy.

    2008ActionRPG5.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Half-Life — Steam game cover

    Half-Life

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

    Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.

    1998Action9.99 USDDeck VerifiedSingle-playerSimilar games →