Games like AdventureQuest 3D
Games like AdventureQuest 3D include The Elder Scrolls Online - Standard Edition, Black Desert, Neverwinter, AION 2, and Diablo® IV. We matched them by the tags players give AdventureQuest 3D on Steam (MMORPG, Exploration, Hack and Slash, PvE, and Parkour): closest matches first, and among equally close ones the better-known games.

The Elder Scrolls Online - Standard Edition
Shared: MMORPG · Exploration · RPG

Black Desert
Shared: Exploration · MMORPG · Action RPG

Neverwinter
Shared: MMORPG · RPG · Massively Multiplayer

AION 2
Shared: MMORPG · Character Customization · PvP

Diablo® IV
Shared: Hack and Slash · Action RPG · MMORPG

FINAL FANTASY XIV Online
Shared: MMORPG · Character Customization · RPG

Guild Wars 2®
Shared: MMORPG · Character Customization · RPG

Path of Exile
Shared: Hack and Slash · MMORPG · Action RPG

Where Winds Meet
Shared: Action RPG · Action-Adventure · Character Customization

Path of Exile 2
Shared: Hack and Slash · MMORPG · Action RPG

Hogwarts Legacy
Shared: Exploration · Character Customization · RPG

Blue Protocol: Star Resonance
Shared: MMORPG · Action RPG · 3D

SpiritVale
Shared: MMORPG · PvE · Action RPG

God of War Ragnarök
Shared: Hack and Slash · Action-Adventure · RPG

Crimson Desert Enhanced
Shared: Exploration · Action · Action-Adventure

Monster Hunter: World
Shared: Character Customization · RPG · Exploration

Phantasy Star Online 2 New Genesis
Shared: MMORPG · Hack and Slash · Action RPG

GrandChase
Shared: PvE · PvP · Hack and Slash

Warframe
Shared: Action RPG · PvE · RPG

Black Myth: Wukong
Shared: Action RPG · RPG · Action-Adventure

Assassin's Creed® Origins
Shared: Action-Adventure · Parkour · RPG

The Elder Scrolls IV: Oblivion Remastered
Shared: Exploration · RPG · Character Customization

No Rest for the Wicked
Shared: Hack and Slash · Exploration · Action RPG