Games like Stars Die
Games like Stars Die include SOMA, What Remains of Edith Finch, Firewatch, Still Wakes the Deep, and No, I'm not a Human. We matched them by the tags players give Stars Die on Steam (Sci-fi, Psychological Horror, Multiple Endings, Walking Simulator, and Lovecraftian): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Psychological Horror · Sci-fi · Story Rich

What Remains of Edith Finch
Shared: Walking Simulator · Story Rich · Mystery

Firewatch
Shared: Walking Simulator · Story Rich · Adventure

Still Wakes the Deep
Shared: Psychological Horror · Lovecraftian · Walking Simulator

No, I'm not a Human
Shared: Psychological Horror · Multiple Endings · Choices Matter

Outer Wilds
Shared: Story Rich · Mystery · Exploration

Detroit: Become Human
Shared: Multiple Endings · Story Rich · Choices Matter

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Psychological Horror · Story Rich

Layers of Fear (2016)
Shared: Psychological Horror · Walking Simulator · Story Rich

The Invincible
Shared: Walking Simulator · Sci-fi · Adventure

Mouthwashing
Shared: Psychological Horror · Story Rich · Walking Simulator

OMORI
Shared: Psychological Horror · Story Rich · Multiple Endings

DREDGE
Shared: Lovecraftian · Psychological Horror · Exploration

The Casting of Frank Stone™
Shared: Multiple Endings · Choices Matter · Psychological Horror

Oxenfree
Shared: Story Rich · Choices Matter · Mystery

Call of Cthulhu®
Shared: Psychological Horror · Lovecraftian · Story Rich

Zero Escape: The Nonary Games
Shared: Story Rich · Multiple Endings · Psychological Horror

The Dark Pictures Anthology: House of Ashes
Shared: Multiple Endings · Psychological Horror · Choices Matter

The Forgotten City
Shared: Adventure · Mystery · Story Rich

STEINS;GATE
Shared: Sci-fi · Story Rich · Multiple Endings

DEATH STRANDING DIRECTOR'S CUT
Shared: Walking Simulator · Story Rich · Sci-fi

Lethal Company
Shared: Psychological Horror · Sci-fi · Horror

ROUTINE
Shared: Sci-fi · Psychological Horror · Walking Simulator

Observation
Shared: Sci-fi · Psychological Horror · Adventure