Single-player games like Stardiver
Below are 8 single-player Steam games similar to Stardiver, 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 Stardiver page.
Ranked picks
- 1

Afterglitch
Single-player alternative to Stardiver — playable solo, no multiplayer required. Shares Indie and Adventure with Stardiver.
Afterglitch is an experimental third-person exploration sci-fi video game. The player is an astronaut whose multidimensional journey to find an extraterrestrial civilization is more important than the destination!
- 2

Raed
Single-player alternative to Stardiver — playable solo, no multiplayer required. Shares Indie and Adventure with Stardiver.
After a black hole incident, you're stranded in space with fading oxygen and unanswered questions. Explore haunting environments, uncover hidden truths, and piece together the fate of your crew. Can you survive long enough to confront the dark secret that awaits?
- 3

The Hidden and Unknown
Single-player alternative to Stardiver — playable solo, no multiplayer required. Shares Indie and Adventure with Stardiver.
The Hidden and Unknown is a story-based game, that aims to widen the perception of its audience in the areas of psychology and philosophy.
- 4

The Trench
Single-player alternative to Stardiver — playable solo, no multiplayer required. Shares Indie and Adventure with Stardiver.
As captain of the Pandora sub, you must explore the Trench and retrieve data from the Neptune wreckage. But beware - the trench is home to unimaginable horrors that will test your courage. Can you survive the terrors of the deep and complete your mission, or will you become the next victim?
- 5

Sinking Eternity
Single-player alternative to Stardiver — playable solo, no multiplayer required. Shares Indie and Adventure with Stardiver.
Sinking Eternity is a single-player underwater exploration RPG. Survive extreme depths, hide from dangerous sea creatures, and uncover the secrets of a civilization lost for millennia.
- 6

Fort Solis
Single-player alternative to Stardiver — playable solo, no multiplayer required. Shares Adventure with Stardiver.
Answer the call from a mining base on Mars as engineer Jack Leary and search for the missing crew. Fort Solis will immerse you with cinematic visuals powered by UE 5 and voice acting of Roger Clark and Troy Baker. Explore the mining complex and reach climax of this narrative thriller experience.
- 7

Vessels
Single-player alternative to Stardiver — playable solo, no multiplayer required. Shares Indie and Adventure with Stardiver.
Quarantined inside an airlock. No memories. No way out. The remaining crew thinks there’s something wrong with you, but the Voice says it’ll help you escape. Navigate volatile conversations & unravel mysteries in this narrative adventure about trust, self-destruction, & shifting identities.
- 8

BLACKSHARD
Single-player alternative to Stardiver — playable solo, no multiplayer required. Shares Indie and Adventure with Stardiver.
BLACKSHARD is a first-person exploration game. Wander through a strange megastructure, the Labyrinth, to unravel its mysteries... Your behavior within the Labyrinth will define the outcome of your journey. What path will you choose to take?