Games like Butterfly Girl
Games like Butterfly Girl include Sanfu, Tales of the Black Forest, Vampires' Melody, Billionaire Lovers, and No Case Should Remain Unsolved. We matched them by the tags players give Butterfly Girl on Steam (Adventure, RPG, Interactive Fiction, Puzzle, and Visual Novel): closest matches first, and among equally close ones the better-known games.

Sanfu
Shared: RPG · Adventure · Puzzle

Tales of the Black Forest
Shared: RPG · Adventure · Visual Novel

Vampires' Melody
Shared: Adventure · Visual Novel · Interactive Fiction

Billionaire Lovers
Shared: RPG · Visual Novel · Anime

No Case Should Remain Unsolved
Shared: Interactive Fiction · Puzzle · Adventure

Finding Paradise
Shared: Adventure · RPG · 2D

Storyteller
Shared: Puzzle · Interactive Fiction · Adventure

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Visual Novel · Interactive Fiction · Adventure

To the Moon
Shared: Adventure · Interactive Fiction · RPG

Pocket Mirror ~ GoldenerTraum
Shared: RPG · Adventure · 2D

Refind Self: The Personality Test Game
Shared: Interactive Fiction · Adventure · Visual Novel

Milk inside a bag of milk inside a bag of milk
Shared: Visual Novel · Interactive Fiction · Adventure

Angels of Death
Shared: Puzzle · RPG · 2D

Until Then
Shared: Visual Novel · Interactive Fiction · Adventure

Otaku's Adventure
Shared: RPG · Adventure · Visual Novel

Rakuen
Shared: Puzzle · RPG · Adventure

Suicide Countdown: 7 Days
Shared: Adventure · Interactive Fiction · Visual Novel

Impostor Factory
Shared: Adventure · RPG · 2D

The Witch's House MV
Shared: RPG · Adventure · 2D

The NOexistenceN of you AND me
Shared: Visual Novel · Interactive Fiction · Anime

Mirror 2: Project X
Shared: Interactive Fiction · Visual Novel · Anime

Under the River
Shared: RPG · Interactive Fiction · Visual Novel

MAHOUTEQ!
Shared: Adventure · Visual Novel · 2D

Mercury Abbey
Shared: Puzzle · Adventure · 2D