Games like WARMA
Games like WARMA include Last Oasis, Notes of Soul, Rust, The Isle, and Grand Theft Auto V Legacy. We matched them by the tags players give WARMA on Steam (Massively Multiplayer, Action, RPG, Early Access, and Simulation): closest matches first, and among equally close ones the better-known games.

Last Oasis
Shared: Massively Multiplayer · RPG · Action

Notes of Soul
Shared: Massively Multiplayer · Action · RPG

Rust
Shared: Action · Massively Multiplayer · Adventure

The Isle
Shared: Massively Multiplayer · Simulation · Action

Grand Theft Auto V Legacy
Shared: Action · Automobile Sim · Adventure

PUBG: BATTLEGROUNDS
Shared: Action · Massively Multiplayer · Survival

The Crew™ 2
Shared: Massively Multiplayer · Racing · Action

OMON Simulator
Shared: Action · Simulation · RPG

Infestation: The New Beginning
Shared: Massively Multiplayer · Action · RPG

Conan Exiles Enhanced
Shared: Massively Multiplayer · RPG · Nudity

Hand Simulator: Survival
Shared: Simulation · RPG · Action

Once Human
Shared: Action · Massively Multiplayer · RPG

EmergeNYC
Shared: Early Access · Action · Simulation

Wreckfest
Shared: Racing · Simulation · Action

Beasts of Bermuda
Shared: Massively Multiplayer · Simulation · Early Access

SCUM
Shared: Massively Multiplayer · Action · Nudity

Feed and Grow: Fish
Shared: Simulation · Action · Early Access

CarX Drift Racing Online
Shared: Simulation · Racing · Massively Multiplayer

Marvel Rivals
Shared: Action · Massively Multiplayer · Multiplayer

Touhou Big Big Battle
Shared: Massively Multiplayer · Early Access · Action

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

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

Dark and Light
Shared: Massively Multiplayer · RPG · Early Access

Neverwinter
Shared: Massively Multiplayer · RPG · Action