Games like Adventure World
Games like Adventure World include Yokai's Secret, Mysteria ~Occult Shadows~, ICEY, DRAGON BALL Z: KAKAROT, and Cyberpunk 2077. We matched them by the tags players give Adventure World on Steam (RPG, Action, Nudity, Anime, and Indie): closest matches first, and among equally close ones the better-known games.

Yokai's Secret
Shared: Nudity · Indie · Action

Mysteria ~Occult Shadows~
Shared: Action · Anime · RPG

ICEY
Shared: Action · Anime · Indie

DRAGON BALL Z: KAKAROT
Shared: RPG · Action · Anime

Cyberpunk 2077
Shared: RPG · Nudity · Action

DEAD OR SCHOOL
Shared: Action · Anime · RPG

NieR:Automata™
Shared: RPG · Action · Anime

The Vagrant
Shared: Action · RPG · Indie

Dungeon Munchies
Shared: Action · Indie · RPG

AKIBA'S TRIP: Undead & Undressed
Shared: Nudity · Anime · Action

Sword Art Online: Fatal Bullet
Shared: RPG · Anime · Action

Bloodstained: Ritual of the Night
Shared: RPG · Action · Anime

The Initial
Shared: Action · Anime · RPG

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

The Chosen RPG
Shared: RPG · Anime · Nudity

Wuthering Waves
Shared: Action · Anime · RPG

Seek Girl Ⅳ
Shared: Nudity · Action · Indie

Lost
Shared: Nudity · Indie · Action

Notes of Soul
Shared: Action · Nudity · RPG

Attack on Titan 2 - A.O.T.2
Shared: Action · Anime · RPG

OMON Simulator
Shared: Nudity · Action · RPG

Sins Of The Demon RPG
Shared: RPG · Anime · Indie

Seek Girl Ⅲ
Shared: Nudity · RPG · Indie

SCARLET NEXUS
Shared: Action · RPG · Anime