Games like Wienne
Games like Wienne include Undertale, DELTARUNE, OMORI, Tales of the Black Forest, and OneShot. We matched them by the tags players give Wienne on Steam (RPG, Indie, Female Protagonist, Pixel Graphics, and Choices Matter): closest matches first, and among equally close ones the better-known games.

Undertale
Shared: Choices Matter · Story Rich · RPG

DELTARUNE
Shared: RPG · Pixel Graphics · Story Rich

OMORI
Shared: Indie · RPG · Pixel Graphics

Tales of the Black Forest
Shared: RPG · Pixel Graphics · Indie

OneShot
Shared: Indie · Pixel Graphics · Story Rich

Ten Trials of Babel: The Doppelganger Maze
Shared: Female Protagonist · RPG · Pixel Graphics

Symphony of War: The Nephilim Saga
Shared: RPG · Story Rich · Female Protagonist

Yes, Your Grace
Shared: Indie · RPG · Choices Matter

Baldur's Gate 3
Shared: RPG · Choices Matter · Story Rich

CrossCode
Shared: RPG · Pixel Graphics · Female Protagonist

To the Moon
Shared: Indie · Story Rich · Pixel Graphics

Ib
Shared: Pixel Graphics · Indie · Story Rich

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Story Rich · Fantasy

LiEat
Shared: Indie · RPG · Pixel Graphics

LISA: The Painful
Shared: RPG · Indie · Story Rich

Celeste
Shared: Pixel Graphics · Indie · Female Protagonist

Dragon Age: Origins - Ultimate Edition
Shared: RPG · Choices Matter · Story Rich

Finding Paradise
Shared: Pixel Graphics · RPG · Story Rich

Drova - Forsaken Kin
Shared: RPG · Pixel Graphics · 2D

The Witch's House MV
Shared: Indie · Pixel Graphics · RPG

Chained Echoes
Shared: RPG · Pixel Graphics · Indie

Heartbound
Shared: RPG · Indie · Pixel Graphics

Always Sometimes Monsters
Shared: RPG · Indie · Pixel Graphics

Virgo Versus The Zodiac
Shared: RPG · Indie · Female Protagonist