IMHO.

Single-player games like Nebula Invasion

Below are 8 single-player Steam games similar to Nebula Invasion, 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 Nebula Invasion page.

Ranked picks

  1. 1
    Nova Swarm — Steam game cover

    Nova Swarm

    Single-player alternative to Nebula Invasion — playable solo, no multiplayer required. Shares Action and Indie with Nebula Invasion.

    Pick a ship, dive into readable bullet chaos, take down huge angry bosses, grab the bonus core you probably should have left alone, and chase one cleaner run in Nova Swarm.

    2026ActionIndie3.59 USDSingle-playerSimilar games →
  2. 2
    Crush The Rebellion! — Steam game cover

    Crush The Rebellion!

    Single-player alternative to Nebula Invasion — playable solo, no multiplayer required. Shares Action and Indie with Nebula Invasion.

    The galactic empire is under siege from the rebel scum in all directions! Fight through endless waves of rebel ships using all of the weapons and resources at your disposal as you execute your sole orders: to Crush The Rebellion!

    2026ActionIndie4.49 USDSingle-playerSimilar games →
  3. 3
    Anceder — Steam game cover

    Anceder

    Single-player alternative to Nebula Invasion — playable solo, no multiplayer required. Shares Action and Indie with Nebula Invasion.

    Dive in the VR arcade shoot-them-up (shmup, shoot'em up, bullet hell). A lot of action is awaiting you. "Insert coin" and jump in the shmup !

    2018ActionIndieCasual12.99 USDSingle-playerSimilar games →
  4. 4
    Beat Invaders — Steam game cover

    Beat Invaders

    Single-player alternative to Nebula Invasion — playable solo, no multiplayer required. Shares Action with Nebula Invasion.

    Beat Invaders is a Vertical Shoot 'Em Up Roguelite - Fight your way through enemy fleets, unlock skills, items, ships, and upgrade them in the next run. Enjoy the smooth neon visuals matching the pushing EDM soundtrack - The perfect game to unwind.

    2022ActionCasual9.99 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    Distant Space — Steam game cover

    Distant Space

    Single-player alternative to Nebula Invasion — playable solo, no multiplayer required. Shares Action and Indie with Nebula Invasion.

    Distant Space are present the arcade game of cosmic fights in arcade style of the 80's, this is a game where you can control the spaceship and forced to destroy extraterrestrials, which are moving in the certain order.

    2016ActionIndieAdventure0.99 USDSingle-playerSimilar games →
  6. 6
    Planes, Bullets and Vodka — Steam game cover

    Planes, Bullets and Vodka

    Single-player alternative to Nebula Invasion — playable solo, no multiplayer required. Shares Action and Indie with Nebula Invasion.

    Fly through danger filled procedurally generated tunnels, avoiding thousands of enemies, on this throwback to the golden age of arcade games.

    2016ActionIndieCasual4.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Furious Angels — Steam game cover

    Furious Angels

    Single-player alternative to Nebula Invasion — playable solo, no multiplayer required. Shares Action and Indie with Nebula Invasion.

    Furious Angels is a brutal score attack shooter with different waves each day. Compete on the leaderboards, transform into a flying tank and shred the skies to pieces!

    2017ActionIndie4.99 USDSingle-playerSimilar games →
  8. 8
    Raiden Legacy - Steam Edition — Steam game cover

    Raiden Legacy - Steam Edition

    Single-player alternative to Nebula Invasion — playable solo, no multiplayer required. Shares Action with Nebula Invasion.

    Originally created by Seibu Kaihatsu, Raiden series comes back with a four-title compilation of these classic scrolling arcade shooter games we enjoyed being challenged with back in the days.

    2015Action9.99 USDSingle-playerSimilar games →