Games like Shera and the Three Treasures
Games like Shera and the Three Treasures include Ideology in Friction, Summer Memories, Yokai's Secret, Mysteria ~Occult Shadows~, and Your Mom. We matched them by the tags players give Shera and the Three Treasures on Steam (RPG, Indie, Sexual Content, Nudity, and Female Protagonist): closest matches first, and among equally close ones the better-known games.

Ideology in Friction
Shared: RPG · Sexual Content · Indie

Summer Memories
Shared: Sexual Content · Nudity · RPG

Yokai's Secret
Shared: Sexual Content · Indie · Nudity

Mysteria ~Occult Shadows~
Shared: Sexual Content · RPG · Nudity

Your Mom
Shared: Nudity · Sexual Content · Hentai

The Curse of Kubel
Shared: RPG · Indie · Sexual Content

NALOGI
Shared: Sexual Content · Nudity · Indie

Lilitales
Shared: RPG · Sexual Content · Indie

Seek Girl Ⅲ
Shared: Sexual Content · Indie · Nudity

Liz The Tower and the Grimoire
Shared: RPG · Indie · Sexual Content

Sakura Dungeon
Shared: Sexual Content · Nudity · RPG

Kunoichi Botan
Shared: RPG · Indie · Sexual Content

Tina: Swordswoman of the Scarlet Prison
Shared: RPG · Indie · Sexual Content

West Sweety
Shared: Sexual Content · Nudity · Indie

Yarimono
Shared: Sexual Content · RPG · Nudity

Bound by Love
Shared: RPG · Sexual Content · Nudity

Seed of Evil
Shared: RPG · Sexual Content · Indie

Lost
Shared: Sexual Content · Nudity · Indie

DEAD OR SCHOOL
Shared: RPG · Female Protagonist · Sexual Content

The Chosen RPG
Shared: RPG · Nudity · Indie

Pretty Neko
Shared: Indie · Sexual Content · RPG

LEWDAPOCALYPSE Hentai Evil
Shared: Sexual Content · Nudity · Indie

Banner of the Maid
Shared: RPG · Indie · Female Protagonist

Terrible Laboratory
Shared: RPG · Indie · Sexual Content