Games like Deadman's Wonder: Chapter 1
Games like Deadman's Wonder: Chapter 1 include Firework, Urban Myth Dissolution Center, Higurashi When They Cry Hou - Ch.1 Onikakushi, Danganronpa 2: Goodbye Despair, and PARANORMASIGHT: The Seven Mysteries of Honjo. We matched them by the tags players give Deadman's Wonder: Chapter 1 on Steam (Visual Novel, Singleplayer, 2D, Supernatural, and Anime): closest matches first, and among equally close ones the better-known games.

Firework
Shared: 2D · Singleplayer · Visual Novel

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

Higurashi When They Cry Hou - Ch.1 Onikakushi
Shared: Visual Novel · Anime · Singleplayer

Danganronpa 2: Goodbye Despair
Shared: Visual Novel · Anime · Singleplayer

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

WITCH ON THE HOLY NIGHT
Shared: Visual Novel · Anime · 2D

Phoenix Wright: Ace Attorney Trilogy
Shared: Visual Novel · Singleplayer · Anime

OPUS: Echo of Starsong - Full Bloom Edition
Shared: Visual Novel · Anime · 2D

ENDER LILIES: Quietus of the Knights
Shared: Singleplayer · 2D · Dark Fantasy

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

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

Tiny Bunny
Shared: Visual Novel · Singleplayer · Atmospheric

Hollow Knight
Shared: 2D · Singleplayer · Atmospheric

Raging Loop
Shared: Visual Novel · Adventure · Singleplayer

STEINS;GATE
Shared: Visual Novel · Anime · Singleplayer

Staffer Retro : A Supernatural Mystery Quest
Shared: Visual Novel · 2D · Singleplayer

Fallout 4
Shared: Singleplayer · Post-apocalyptic · Atmospheric

FAR: Lone Sails
Shared: Singleplayer · Post-apocalyptic · Atmospheric

The Crown of Leaves
Shared: Visual Novel · Singleplayer · Adventure

Tales of the Black Forest
Shared: Visual Novel · Anime · Singleplayer

Hollow Knight: Silksong
Shared: 2D · Singleplayer · Indie

Fox Hime Zero
Shared: Visual Novel · Anime · Singleplayer

Danganronpa V3: Killing Harmony
Shared: Visual Novel · Anime · Singleplayer

The Rewinder
Shared: Singleplayer · 2D · Adventure