IMHO.

Single-player games like Protocol Omega: Resist and Survive

Below are 8 single-player Steam games similar to Protocol Omega: Resist and Survive, 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 Protocol Omega: Resist and Survive page.

Ranked picks

  1. 1
    Gunslinger Nova — Steam game cover

    Gunslinger Nova

    Single-player alternative to Protocol Omega: Resist and Survive — playable solo, no multiplayer required. Shares Action with Protocol Omega: Resist and Survive.

    A top-down, 2d space-shooter that pits the user against swarms of alien ships from other dimensions. Destroy all enemies and portals as fast as possible. Battle increasingly tougher enemies through 40 Campaign levels and Endless Mode!

    2023Action1.99 USDSingle-playerSimilar games →
  2. 2
    Magnetar — Steam game cover

    Magnetar

    Single-player alternative to Protocol Omega: Resist and Survive — playable solo, no multiplayer required. Shares Action with Protocol Omega: Resist and Survive.

    Magnetar is a top-down space shooter set in a unique physics-based environment packed with opportunities and hazards where you'll need all your skill to survive. Collect credits to upgrade ships and allies. Features 50 campaign levels and endless random levels.

    2026ActionCasual1.99 USDSingle-playerSimilar games →
  3. 3
    Star Duality — Steam game cover

    Star Duality

    Single-player alternative to Protocol Omega: Resist and Survive — playable solo, no multiplayer required. Shares Action and Indie with Protocol Omega: Resist and Survive.

    A quick arcade-style shooter where you constantly have to weigh choices between improving your stats, expanding your mines, building your defenses or going on the attack, before the enemies either take your resources or overrun you 

    ActionStrategyIndieSingle-playerSimilar games →
  4. 4
    DnB Starfighter — Steam game cover

    DnB Starfighter

    Single-player alternative to Protocol Omega: Resist and Survive — playable solo, no multiplayer required. Shares Action and Indie with Protocol Omega: Resist and Survive.

    A skill-driven space shooter where the only goal is a better run.

    ActionIndieSingle-playerSimilar games →
  5. 5
    Blast'N Bounty — Steam game cover

    Blast'N Bounty

    Single-player alternative to Protocol Omega: Resist and Survive — playable solo, no multiplayer required. Shares Action and Indie with Protocol Omega: Resist and Survive.

    Blast’N Bounty is a vertical scrolling shoot’em up featuring 8 stages players can tackle in the order of their choosing. Cruise through a crazy solar system in a mix of pixel art and low poly 3D with action that’s easy to learn but tough to master!

    2026ActionIndie4.99 USDSingle-playerSimilar games →
  6. 6
    HyperFeat — Steam game cover

    HyperFeat

    Single-player alternative to Protocol Omega: Resist and Survive — playable solo, no multiplayer required. Shares Action and Indie with Protocol Omega: Resist and Survive.

    A top down 2D space shooter bullethell with roguelike elements awaits you. Dodge, weave and shoot your way through waves of enemies while gaining upgrades trying to survive as long as possible.

    2021ActionIndie2.99 USDSingle-playerSimilar games →
  7. 7
    Psyvariar 3 — Steam game cover

    Psyvariar 3

    Single-player alternative to Protocol Omega: Resist and Survive — playable solo, no multiplayer required. Shares Action with Protocol Omega: Resist and Survive.

    Play as one of 7 pilots in this thrilling sequel to a SHMUP classic. The time has come for a new generation of Psyvariars to rise… and save humanity.

    2026Action15.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Cosmonator — Steam game cover

    Cosmonator

    Single-player alternative to Protocol Omega: Resist and Survive — playable solo, no multiplayer required. Shares Action and Indie with Protocol Omega: Resist and Survive.

    Cosmonator is an 'RPG-em-up': a hybrid of classic fast-paced top-down shoot-em-up action infused with deep character building elements. Build up your own unique alien-killing machine to avenge the destruction of planet Earth!

    2019ActionIndieRPG6.99 USDSingle-playerSimilar games →