Games like Ghost in the pool
Games like Ghost in the pool include Milk inside a bag of milk inside a bag of milk, The NOexistenceN of you AND me, PARANORMASIGHT: The Seven Mysteries of Honjo, OPUS: Echo of Starsong - Full Bloom Edition, and The Hungry Lamb: Traveling in the Late Ming Dynasty. We matched them by the tags players give Ghost in the pool on Steam (Adventure, Visual Novel, Interactive Fiction, 2D, and Anime): closest matches first, and among equally close ones the better-known games.

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

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

PARANORMASIGHT: The Seven Mysteries of Honjo
Shared: Adventure · Visual Novel · Anime

OPUS: Echo of Starsong - Full Bloom Edition
Shared: Visual Novel · Interactive Fiction · Anime

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

Tiny Bunny
Shared: Visual Novel · 2D · Interactive Fiction

The Weeping Swan: Ten Days of the City's Fall
Shared: Interactive Fiction · Visual Novel · Anime

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

No Case Should Remain Unsolved
Shared: Interactive Fiction · Visual Novel · Adventure

Slay the Princess — The Pristine Cut
Shared: Visual Novel · Hand-drawn · Interactive Fiction

GRIS
Shared: Adventure · Beautiful · Hand-drawn

Lay a Beauty to Rest: The Darkness Peach Blossom Spring
Shared: Adventure · Visual Novel · Interactive Fiction

Doki Doki Literature Club Plus!
Shared: Visual Novel · Anime · 2D

Endless Monday: Dreams and Deadlines
Shared: Visual Novel · Interactive Fiction · 2D

Urban Myth Dissolution Center
Shared: Visual Novel · Adventure · 2D

Billionaire Lovers
Shared: Visual Novel · Anime · Interactive Fiction

NEEDY STREAMER OVERLOAD
Shared: Visual Novel · Anime · 2D

WITCH ON THE HOLY NIGHT
Shared: Visual Novel · Adventure · Anime

MAHOUTEQ!
Shared: Adventure · Visual Novel · 2D

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

OMORI
Shared: 2D · Hand-drawn · Story Rich

Gorogoa
Shared: Hand-drawn · Beautiful · Adventure

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

Danganronpa: Trigger Happy Havoc
Shared: Visual Novel · Anime · Adventure