Games like Axion
Games like Axion include Rust, S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition, Far Cry® 4, Don't Starve Together, and Cyberpunk 2077. We matched them by the tags players give Axion on Steam (RPG, Indie, Action, Survival, and Multiplayer): closest matches first, and among equally close ones the better-known games.

Rust
Shared: Survival · Multiplayer · Open World

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: Survival · FPS · Open World

Far Cry® 4
Shared: Action · Open World · FPS

Don't Starve Together
Shared: Survival · Multiplayer · Open World

Cyberpunk 2077
Shared: RPG · Open World · FPS

Fallout 4
Shared: RPG · Open World · Singleplayer

Borderlands 3
Shared: RPG · Multiplayer · FPS

Far Cry 3
Shared: Action · FPS · Open World

Monster Hunter: World
Shared: Action · RPG · Multiplayer

Fallout: New Vegas
Shared: RPG · Open World · Action

7 Days to Die
Shared: Survival · Multiplayer · Open World

Palworld
Shared: Survival · Open World · Multiplayer

Mount & Blade II: Bannerlord
Shared: RPG · Open World · Multiplayer

ELDEN RING
Shared: RPG · Open World · Multiplayer

Grand Theft Auto V Legacy
Shared: Action · Multiplayer · Open World

ARK: Survival Ascended
Shared: Survival · Multiplayer · Open World

Green Hell
Shared: Survival · Multiplayer · Action

Sons Of The Forest
Shared: Survival · Multiplayer · Open World

Once Human
Shared: Survival · Action · Multiplayer

Last Oasis
Shared: RPG · Survival · Action

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Open World · Atmospheric

Project Zomboid
Shared: Survival · Multiplayer · Open World

PUBG: BATTLEGROUNDS
Shared: Survival · Multiplayer · FPS

Tom Clancy’s The Division™
Shared: Action · Multiplayer · Open World