IMHO.

Single-player games like Seven Suns of Orion

Below are 8 single-player Steam games similar to Seven Suns of Orion, 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 Seven Suns of Orion page.

Ranked picks

  1. 1
    Nano Squadron — Steam game cover

    Nano Squadron

    Single-player alternative to Seven Suns of Orion — playable solo, no multiplayer required. Shares Action and Indie with Seven Suns of Orion.

    Manage your shields, evolve your ship, defend Earth. Nano Squadron is a top-down space roguelite where every run brings new upgrades and every mistake leaves you exposed.

    2026ActionIndie4.79 USDSingle-playerSimilar games →
  2. 2
    Xalvorynthium — Steam game cover

    Xalvorynthium

    Single-player alternative to Seven Suns of Orion — playable solo, no multiplayer required. Shares Action and Indie with Seven Suns of Orion.

    **Xalvorynthium** is a neon arcade action roguelike shooter where you dodge enemy fire, evolve your weapons, battle bosses, and chase higher scores through escalating waves of sci-fi chaos.

    2026ActionStrategyIndie4.49 USDSingle-playerSimilar games →
  3. 3
    Crush The Rebellion! — Steam game cover

    Crush The Rebellion!

    Single-player alternative to Seven Suns of Orion — playable solo, no multiplayer required. Shares Action and Indie with Seven Suns of Orion.

    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 →
  4. 4
    Planet Killer — Steam game cover

    Planet Killer

    Single-player alternative to Seven Suns of Orion — playable solo, no multiplayer required. Shares Action with Seven Suns of Orion.

    A physics-driven sci-fi destruction roguelite. Orbit hostile worlds, unleash devastating weapons, and carve real craters into fully simulated planets while escalating planetary defenses fight back.

    2026ActionSingle-playerSimilar games →
  5. 5
    Hellpurge — Steam game cover

    Hellpurge

    Single-player alternative to Seven Suns of Orion — playable solo, no multiplayer required. Shares Action and Indie with Seven Suns of Orion.

    Hold your ground against the demons of Hell and bring down their evil overlords, in this 2D action survivors-like.

    ActionIndieSingle-playerSimilar games →
  6. 6
    Archaea Ascent — Steam game cover

    Archaea Ascent

    Single-player alternative to Seven Suns of Orion — playable solo, no multiplayer required. Shares Action and Indie with Seven Suns of Orion.

    Undergo trials, build your identity, build a team, build your skills, fight the system. The operators are watching — and the directives are getting harder to follow.

    2026ActionIndieCasualSingle-playerSimilar games →
  7. 7
    Warriors of the End — Steam game cover

    Warriors of the End

    Single-player alternative to Seven Suns of Orion — playable solo, no multiplayer required. Shares Action and Indie with Seven Suns of Orion.

    Warriors of the End is a fast-paced tower-defense horde-battler roguelike. Defend the Princess against enemy hordes by strategically positioning and upgrading your towers, customize unique characters with deadly weapons and spells, discover mindblowing synergies and create game-breaking builds!

    2026ActionIndieRPGSingle-playerSimilar games →
  8. 8
    N.E.O.N. HORIZON — Steam game cover

    N.E.O.N. HORIZON

    Single-player alternative to Seven Suns of Orion — playable solo, no multiplayer required. Shares Action and Indie with Seven Suns of Orion.

    Survive 100 increasingly dangerous waves in a sci-fi roguelite shooter where every decision shapes your ship. Upgrade your systems, discover powerful relics, forge unique synergies, and uncover the mystery that awaits beyond the Horizon.

    ActionIndieAdventureSingle-playerSimilar games →