Games like The Demon King: Harem
Games like The Demon King: Harem include Baldur's Gate 3, Persona 5 Royal, Metaphor: ReFantazio, Clair Obscur: Expedition 33, and Persona 4 Golden. We matched them by the tags players give The Demon King: Harem on Steam (RPG, Nudity, Anime, JRPG, and Turn-Based Combat): closest matches first, and among equally close ones the better-known games.

Baldur's Gate 3
Shared: RPG · Turn-Based Combat · Sexual Content

Persona 5 Royal
Shared: JRPG · Anime · RPG

Metaphor: ReFantazio
Shared: RPG · Anime · JRPG

Clair Obscur: Expedition 33
Shared: RPG · Turn-Based Combat · JRPG

Persona 4 Golden
Shared: JRPG · Anime · RPG

Persona 3 Reload
Shared: RPG · Anime · JRPG

Summer Memories
Shared: Nudity · Sexual Content · RPG

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

Yarimono
Shared: Nudity · RPG · Sexual Content

NEKOPARA Vol. 1
Shared: Nudity · Anime · Sexual Content

FINAL FANTASY X/X-2 HD Remaster
Shared: RPG · JRPG · Turn-Based Combat

Tales of ARISE
Shared: RPG · Anime · JRPG

The Legend of Heroes: Trails of Cold Steel III
Shared: RPG · JRPG · Anime

NEKOPARA Vol. 0
Shared: Nudity · Anime · Sexual Content

NEKOPARA Vol. 2
Shared: Anime · Nudity · Sexual Content

Tricolour Lovestory
Shared: Nudity · Anime · Sexual Content

NEKOPARA Vol. 3
Shared: Anime · Nudity · Sexual Content

Yakuza: Like a Dragon
Shared: RPG · JRPG · Turn-Based Combat

The Legend of Heroes: Trails of Cold Steel
Shared: RPG · Anime · JRPG

Tales of Berseria™
Shared: RPG · Anime · JRPG

FAIRY TAIL
Shared: RPG · Anime · JRPG

FINAL FANTASY XV WINDOWS EDITION
Shared: RPG · JRPG · Story Rich

DATE A LIVE: Rio Reincarnation
Shared: Anime · Nudity · Sexual Content

NEKOPARA Vol. 4
Shared: Anime · Nudity · Sexual Content