Games like Cube Creator X
Games like Cube Creator X include Mount & Blade: Warband, Mount & Blade II: Bannerlord, 鬼谷八荒 Tale of Immortal, Kenshi, and Black Myth: Wukong. We matched them by the tags players give Cube Creator X on Steam (RPG, Action, and Sandbox): closest matches first, and among equally close ones the better-known games.

Mount & Blade: Warband
Shared: RPG · Sandbox · Action

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

鬼谷八荒 Tale of Immortal
Shared: RPG · Sandbox · Action

Kenshi
Shared: Sandbox · RPG · Action

Black Myth: Wukong
Shared: Action · RPG

DRAGON QUEST BUILDERS™ 2
Shared: RPG · Action · Sandbox

Mount & Blade: With Fire & Sword
Shared: RPG · Action · Sandbox

Portal Knights
Shared: RPG · Sandbox · Action

Freeman: Guerrilla Warfare
Shared: Action · RPG · Sandbox

Farever
Shared: RPG · Action · Sandbox

Monster Hunter: World
Shared: Action · RPG

Mount & Blade
Shared: RPG · Sandbox · Action

Star Valor
Shared: Action · Sandbox · RPG

Middle-earth: Shadow of War
Shared: Action · RPG

DRAGON BALL Z: KAKAROT
Shared: RPG · Action

Warframe
Shared: Action · RPG

We Who Are About To Die
Shared: Action · RPG · Sandbox

Fallout 4
Shared: RPG · Action · Sandbox

Last Oasis
Shared: RPG · Action · Sandbox

The Scroll of Taiwu : Beyond The Dome
Shared: RPG · Sandbox

MONSTER HUNTER RISE
Shared: Action · RPG

Fallout: New Vegas
Shared: RPG · Action · Sandbox

Rust
Shared: Sandbox · Action · RPG

Terraria
Shared: Sandbox · Action · RPG