Games like Three Sons
Games like Three Sons include Night in the Woods, The Witcher 3: Wild Hunt — Remastered, OneShot, Undertale, and Detroit: Become Human. We matched them by the tags players give Three Sons on Steam (Minimalist, Snow, Stylized, Interactive Fiction, and Story Rich): closest matches first, and among equally close ones the better-known games.

Night in the Woods
Shared: Story Rich · Stylized · Atmospheric

The Witcher 3: Wild Hunt — Remastered
Shared: Story Rich · Atmospheric · Choices Matter

OneShot
Shared: Story Rich · Atmospheric · Choices Matter

Undertale
Shared: Story Rich · Choices Matter · Multiple Endings

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

Pentiment
Shared: Story Rich · Interactive Fiction · Stylized

The Life and Suffering of Sir Brante
Shared: Story Rich · Choices Matter · Interactive Fiction

Tiny Bunny
Shared: Story Rich · Atmospheric · Choices Matter

Late Shift
Shared: Choices Matter · Interactive Fiction · Story Rich

The Casting of Frank Stone™
Shared: Choices Matter · Story Rich · Multiple Endings

Oxenfree
Shared: Story Rich · Choices Matter · Atmospheric

Road 96
Shared: Choices Matter · Story Rich · Atmospheric

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

Life is Strange: Before the Storm
Shared: Story Rich · Choices Matter · Atmospheric

Hollow Knight
Shared: 2D · Story Rich · Atmospheric

INSIDE
Shared: Story Rich · Atmospheric · Indie

Until Dawn™
Shared: Choices Matter · Interactive Fiction · Story Rich

The Wolf Among Us
Shared: Story Rich · Choices Matter · Multiple Endings

Sable
Shared: Story Rich · Atmospheric · Stylized

Sally Face - Episode One
Shared: Story Rich · Indie · Atmospheric

Firewatch
Shared: Story Rich · Atmospheric · Adventure

Stray Gods: The Roleplaying Musical
Shared: Interactive Fiction · Story Rich · Choices Matter

Life is Strange: True Colors
Shared: Story Rich · Choices Matter · Multiple Endings

What Remains of Edith Finch
Shared: Story Rich · Atmospheric · Mystery