Games like Leviathan A Survival RPG
Games like Leviathan A Survival RPG include Summer Memories, Mysteria ~Occult Shadows~, Ideology in Friction, NALOGI, and Sister Travel. We matched them by the tags players give Leviathan A Survival RPG on Steam (Adventure, RPG, Indie, Sexual Content, and Nudity): closest matches first, and among equally close ones the better-known games.

Summer Memories
Shared: Sexual Content · Nudity · RPG

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

Ideology in Friction
Shared: RPG · Sexual Content · Indie

NALOGI
Shared: Sexual Content · Indie · Nudity

Sister Travel
Shared: Adventure · RPG · Indie

Seek Girl Ⅲ
Shared: Sexual Content · Indie · Nudity

Seed of Evil
Shared: RPG · Sexual Content · Indie

Sakura Dungeon
Shared: Sexual Content · Nudity · RPG

The Chosen RPG
Shared: RPG · Adventure · Indie

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

West Sweety
Shared: Sexual Content · Nudity · Indie

Lost
Shared: Sexual Content · Nudity · Indie

Terrible Laboratory
Shared: RPG · Indie · Sexual Content

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

Yarimono
Shared: Sexual Content · RPG · Nudity

LEWDAPOCALYPSE Hentai Evil
Shared: Sexual Content · Nudity · Indie

Bloody Spell
Shared: Sexual Content · Nudity · RPG

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

Cursed Armor
Shared: RPG · Adventure · Sexual Content

Phantom Thief Celianna
Shared: RPG · Indie · Sexual Content

Kunoichi Botan
Shared: RPG · Indie · Sexual Content

Chevalier Historie
Shared: RPG · Indie · Adventure

FALL IN LABYRINTH
Shared: Adventure · Sexual Content · Nudity

Tales of the Black Forest
Shared: RPG · Adventure · Indie