Games like Belle-de-Nuit
Games like Belle-de-Nuit include Baldur's Gate 3, Love Is All Around, The Life and Suffering of Sir Brante, Suzerain, and Choice of Robots. We matched them by the tags players give Belle-de-Nuit on Steam (RPG, Interactive Fiction, Choose Your Own Adventure, Emotional, and Text-Based): closest matches first, and among equally close ones the better-known games.

Baldur's Gate 3
Shared: RPG · Character Customization · Choices Matter

Love Is All Around
Shared: Romance · Interactive Fiction · Sexual Content

The Life and Suffering of Sir Brante
Shared: RPG · Interactive Fiction · Choose Your Own Adventure

Suzerain
Shared: Choose Your Own Adventure · Interactive Fiction · RPG

Choice of Robots
Shared: Choose Your Own Adventure · Interactive Fiction · Text-Based

Mass Effect™ Legendary Edition
Shared: RPG · Choices Matter · Character Customization

Kingdom Come: Deliverance
Shared: RPG · Historical · Swordplay

Roadwarden
Shared: RPG · Text-Based · Interactive Fiction

Road to Empress I
Shared: RPG · Choices Matter · Interactive Fiction

Life is Strange: True Colors
Shared: Choose Your Own Adventure · Emotional · Choices Matter

To the Moon
Shared: Emotional · Interactive Fiction · RPG

Knowledge, or know Lady
Shared: Romance · Interactive Fiction · Sexual Content

Aliya: Timelink
Shared: RPG · Interactive Fiction · Text-Based

Dispatch
Shared: Choices Matter · Choose Your Own Adventure · Romance

GreedFall
Shared: RPG · Character Customization · Choices Matter

The Life and Suffering of Sir Brante — Chapter 1&2
Shared: Interactive Fiction · Choose Your Own Adventure · RPG

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Interactive Fiction · Historical · RPG

I Wani Hug that Gator!
Shared: Choose Your Own Adventure · Romance · Interactive Fiction

Sacred Fire: A Role Playing Game
Shared: RPG · Emotional · Interactive Fiction

Love Curse: Find Your Soulmate
Shared: Romance · RPG · Female Protagonist

Arcadie: Second-Born
Shared: Interactive Fiction · Romance · Choose Your Own Adventure

Vampire: The Masquerade — Night Road
Shared: Choose Your Own Adventure · Interactive Fiction · Text-Based

Life is Strange: Double Exposure
Shared: Choose Your Own Adventure · Romance · Choices Matter

Dragon Age™ Inquisition
Shared: RPG · Character Customization · Choices Matter