Games like Lovely Fox
Games like Lovely Fox include Mirror 2: Project X, Bloody Spell, The Killing Antidote, Mysteria ~Occult Shadows~, and Summer Memories. We matched them by the tags players give Lovely Fox on Steam (Sexual Content, Nudity, Female Protagonist, Early Access, and RPG): closest matches first, and among equally close ones the better-known games.

Mirror 2: Project X
Shared: Female Protagonist · Visual Novel · 3D

Bloody Spell
Shared: Sexual Content · Nudity · Female Protagonist

The Killing Antidote
Shared: Sexual Content · Female Protagonist · 3D

Mysteria ~Occult Shadows~
Shared: Sexual Content · Female Protagonist · Nudity

Summer Memories
Shared: Sexual Content · Nudity · RPG

Bayonetta
Shared: Female Protagonist · Sexual Content · Nudity

Stellar Blade™
Shared: Sexual Content · Female Protagonist · Action

Danganronpa Another Episode: Ultra Despair Girls
Shared: Female Protagonist · Sexual Content · Anime

LEWDAPOCALYPSE Hentai Evil
Shared: Sexual Content · Nudity · Female Protagonist

Bloodstained: Ritual of the Night
Shared: Female Protagonist · RPG · Anime

Sakura Dungeon
Shared: Sexual Content · Nudity · Female Protagonist

Tricolour Lovestory
Shared: Sexual Content · Nudity · Visual Novel

Cyberpunk 2077
Shared: Nudity · RPG · Singleplayer

Dispatch
Shared: Sexual Content · Nudity · Superhero

Lost
Shared: Sexual Content · Nudity · RPG

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

To Be or Not to Be
Shared: Sexual Content · Nudity · RPG

Taboo Trial
Shared: Sexual Content · Female Protagonist · Nudity

NEKOPARA Vol. 0
Shared: Nudity · Sexual Content · Visual Novel

NEKOPARA Vol. 1
Shared: Nudity · Sexual Content · Visual Novel

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

Fallen girl - Black rose and the fire of desire
Shared: Sexual Content · Nudity · Female Protagonist

Lunar Eclipse
Shared: Sexual Content · Nudity · Female Protagonist

NieR:Automata™
Shared: RPG · Female Protagonist · Anime