Games like no sleep for sole
Games like no sleep for sole include No, I'm not a Human, Darkwood, Undertale, OMORI, and Mouthwashing. We matched them by the tags players give no sleep for sole on Steam (Strategy, Psychological Horror, Story Rich, Surreal, and Multiple Endings): closest matches first, and among equally close ones the better-known games.

No, I'm not a Human
Shared: Psychological Horror · Story Rich · Choices Matter

Darkwood
Shared: Psychological Horror · Survival Horror · Dark

Undertale
Shared: Story Rich · Multiple Endings · Choices Matter

OMORI
Shared: Psychological Horror · Story Rich · Multiple Endings

Mouthwashing
Shared: Psychological Horror · Story Rich · Atmospheric

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

OneShot
Shared: Story Rich · Choices Matter · Atmospheric

Beholder
Shared: Strategy · Choices Matter · Story Rich

SOMA
Shared: Psychological Horror · Story Rich · Atmospheric

Death and Taxes
Shared: Story Rich · Psychological Horror · Strategy

SILENT HILL 2
Shared: Psychological Horror · Story Rich · Survival Horror

Pathologic 2
Shared: Story Rich · Choices Matter · Psychological Horror

Tiny Bunny
Shared: Story Rich · Psychological Horror · Choices Matter

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

The Coffin of Andy and Leyley
Shared: Story Rich · Psychological Horror · Multiple Endings

Sally Face - Episode One
Shared: Psychological Horror · Story Rich · Dark

Outlast 2
Shared: Psychological Horror · Survival Horror · Dark

Into the Dead: Our Darkest Days
Shared: Psychological Horror · Survival Horror · Choices Matter

The Test
Shared: Story Rich · Multiple Endings · Psychological Horror

Milk outside a bag of milk outside a bag of milk
Shared: Psychological Horror · Story Rich · Multiple Endings

Five Nights at Freddy's 2
Shared: Psychological Horror · Survival Horror · Strategy

FAITH: The Unholy Trinity
Shared: Psychological Horror · Story Rich · Dark

Outlast
Shared: Psychological Horror · Survival Horror · Atmospheric

Beholder 2
Shared: Strategy · Choices Matter · Story Rich