IMHO.

Single-player games like Solitary Sentinel

Below are 8 single-player Steam games similar to Solitary Sentinel, 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 Solitary Sentinel page.

Ranked picks

  1. 1
    Compadrone: Land Wars — Steam game cover

    Compadrone: Land Wars

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

    In this fast-paced roguelite arena shooter with tower-defense twists, control a drone capable of wielding multiple weapons and fight hordes of alien warbots. Collect resources and XP to unlock new weapons, towers, abilities, and drones.

    2025ActionIndieAdventure4.99 USDSingle-playerSimilar games →
  2. 2
    Anima Reaver — Steam game cover

    Anima Reaver

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

    A 3D Sci-Fi space shooter game where you fight against big flagships and bases to unlock the secrets of the world.

    ActionIndieAdventureSingle-playerSimilar games →
  3. 3
    UNDERLOD — Steam game cover

    UNDERLOD

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

    Underlod is an arcade RTS. Control groups of units to take down waves of enemies. Upgrade your troops using synergies and powerful item effects.

    ActionStrategyIndieSingle-playerSimilar games →
  4. 4
    Warriors of the End — Steam game cover

    Warriors of the End

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

    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!

    ActionIndieRPGSingle-playerSimilar games →
  5. 5
    Void Strike — Steam game cover

    Void Strike

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

    Shred endless waves of hostile spaceships in a 1-bit arcade survival roguelite. Build absurd weapon combos, unlock pilots, upgrade your fighter, and survive escalating dogfights against swarms, elite enemies, and colossal bosses.

    2026ActionSingle-playerSimilar games →
  6. 6
    Spectron — Steam game cover

    Spectron

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

    A fast-paced, retro-style space shooter with challenging levels. Race against the clock as you blast and dodge through waves of enemies and obstacles, pushing your reflexes to the limit.

    ActionIndieSingle-playerSimilar games →
  7. 7
    Space Carrier Zero — Steam game cover

    Space Carrier Zero

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

    One carrier against the sector's whole navy. The guns fire themselves, you steer the bow, pick the route, and decide how long to stay before the alarm brings the fleet down on you. Collect permanent cards that increase your strength each run. Five acts with increasing battle scope.

    2026Action4.24 USDSingle-playerSimilar games →
  8. 8
    GEOMETRY NEXUS — Steam game cover

    GEOMETRY NEXUS

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

    Geometry Nexus is a neon action roguelike where your weapons fire automatically. Dodge enemy swarms, collect upgrades, trigger Overdrive, grow stronger between runs, and survive ten minutes to defeat the Nexus Guardian.

    2026ActionIndieCasualSingle-playerSimilar games →