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

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.
- 2

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.
- 3

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.
- 4

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!
- 5

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.
- 6

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.
- 7

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.
- 8

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.