Games like WARMA -Open character editor
Games like WARMA -Open character editor include Last Oasis, Notes of Soul, Rust, OMON Simulator, and Conan Exiles Enhanced. We matched them by the tags players give WARMA -Open character editor on Steam (Action, Adventure, RPG, Massively Multiplayer, and Indie): closest matches first, and among equally close ones the better-known games.

Last Oasis
Shared: Massively Multiplayer · Action · RPG

Notes of Soul
Shared: Action · Massively Multiplayer · Adventure

Rust
Shared: Adventure · Survival · Action

OMON Simulator
Shared: Action · RPG · Adventure

Conan Exiles Enhanced
Shared: Nudity · Survival · RPG

Once Human
Shared: Action · Survival · Multiplayer

Hand Simulator: Survival
Shared: Adventure · Action · Simulation

The Isle
Shared: Simulation · Massively Multiplayer · Adventure

SCUM
Shared: Massively Multiplayer · Action · Nudity

PUBG: BATTLEGROUNDS
Shared: Action · Survival · Multiplayer

Feed and Grow: Fish
Shared: Action · Simulation · Adventure

Beasts of Bermuda
Shared: Adventure · Massively Multiplayer · Simulation

Don't Starve Together
Shared: Adventure · Survival · Multiplayer

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

Dark and Light
Shared: RPG · Massively Multiplayer · Adventure

ARK: Survival Evolved
Shared: Adventure · Survival · Action

Neverwinter
Shared: RPG · Adventure · Massively Multiplayer

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

Remnant: From the Ashes
Shared: Action · RPG · Adventure

EmergeNYC
Shared: Action · Simulation · RPG

Gloria Victis: Medieval MMORPG
Shared: Action · Massively Multiplayer · RPG

Monster Hunter: World
Shared: Action · RPG · Adventure

ARK: Survival Ascended
Shared: Adventure · Action · Survival

Terraria
Shared: Adventure · Survival · Multiplayer