Games like RPG World - Action RPG Maker
Games like RPG World - Action RPG Maker include Monster Hunter: World, Terraria, Rust, Portal Knights, and Once Human. We matched them by the tags players give RPG World - Action RPG Maker on Steam (Adventure, RPG, Action, Multiplayer, and Game Development): closest matches first, and among equally close ones the better-known games.

Monster Hunter: World
Shared: Action · Multiplayer · RPG

Terraria
Shared: Multiplayer · Sandbox · Adventure

Rust
Shared: Multiplayer · Adventure · Sandbox

Portal Knights
Shared: Adventure · RPG · Multiplayer

Once Human
Shared: Multiplayer · Action · Free to Play

Last Epoch
Shared: RPG · Multiplayer · Action RPG

Neverwinter
Shared: RPG · Adventure · Multiplayer

Don't Starve Together
Shared: Multiplayer · Adventure · Co-op

Where Winds Meet
Shared: Multiplayer · Adventure · Action RPG

Warhammer 40,000: Space Marine 2
Shared: Action · Multiplayer · Adventure

The Elder Scrolls Online - Standard Edition
Shared: RPG · Adventure · Multiplayer

ARK: Survival Evolved
Shared: Multiplayer · Adventure · Building

ARK: Survival Ascended
Shared: Multiplayer · Adventure · Action

Last Oasis
Shared: RPG · Adventure · Action

Torchlight II
Shared: RPG · Action RPG · Multiplayer

Human Fall Flat
Shared: Adventure · Multiplayer · Co-op

The Incredible Adventures of Van Helsing
Shared: RPG · Adventure · Action

Grand Theft Auto V Legacy
Shared: Action · Multiplayer · Adventure

Enshrouded
Shared: Multiplayer · RPG · Adventure

Mount & Blade II: Bannerlord
Shared: RPG · Multiplayer · Action

Monster Hunter Wilds
Shared: Action · Multiplayer · Adventure

Wobbly Life
Shared: Adventure · Multiplayer · Sandbox

Warhammer 40,000: Inquisitor - Martyr
Shared: RPG · Action · Adventure

Hero Siege
Shared: RPG · Multiplayer · Action RPG