Games like Magical Princess
Games like Magical Princess include Volcano Princess, LoveChoice, 小白兔电商~Bunny e-Shop, Growing Up, and Undertale. We matched them by the tags players give Magical Princess on Steam (Life Sim, Multiple Endings, Choices Matter, RPG, and Anime): closest matches first, and among equally close ones the better-known games.

Volcano Princess
Shared: Life Sim · Multiple Endings · Choices Matter

LoveChoice
Shared: Choices Matter · Multiple Endings · Dating Sim

小白兔电商~Bunny e-Shop
Shared: Anime · Life Sim · Dating Sim

Growing Up
Shared: Life Sim · Choices Matter · RPG

Undertale
Shared: Choices Matter · Multiple Endings · RPG

Emily is Away <3
Shared: Choices Matter · Multiple Endings · Simulation

Princess Maker 2 Refine
Shared: Multiple Endings · RPG · Simulation

Road to Empress I
Shared: Choices Matter · RPG · Female Protagonist

Otaku's Adventure
Shared: Multiple Endings · RPG · Dating Sim

Mirror 2: Project X
Shared: Anime · Female Protagonist · Multiple Endings

Senren * Banka
Shared: Anime · Dating Sim · Multiple Endings

Far Away
Shared: Choices Matter · Female Protagonist · Visual Novel

I Was a Teenage Exocolonist
Shared: Life Sim · Choices Matter · RPG

Path Of Wuxia
Shared: RPG · Anime · Dating Sim

Love Is All Around
Shared: Dating Sim · Multiple Endings · Choices Matter

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

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Multiple Endings · Visual Novel · Anime

Long Live The Queen
Shared: Anime · Female Protagonist · Simulation

ATRI -My Dear Moments-
Shared: Anime · Multiple Endings · Visual Novel

Chinese Parents
Shared: Life Sim · RPG · Simulation

Lucy -The Eternity She Wished For-
Shared: Anime · Multiple Endings · Dating Sim

Emily is Away Too
Shared: Choices Matter · Simulation · Multiple Endings

The NOexistenceN of you AND me
Shared: Multiple Endings · Anime · Visual Novel

Sweet Home
Shared: RPG · Female Protagonist · Multiple Endings

