Games like Darkest Messia
Games like Darkest Messia include Dune: Awakening, ARK: Survival Ascended, Enshrouded, Kenshi, and V Rising. We matched them by the tags players give Darkest Messia on Steam (PvE, Gun Customization, Character Customization, Team-Based, and Inventory Management): closest matches first, and among equally close ones the better-known games.

Dune: Awakening
Shared: PvE · Exploration · Survival

ARK: Survival Ascended
Shared: PvE · Character Customization · Survival

Enshrouded
Shared: Survival · Exploration · Crafting

Kenshi
Shared: Sandbox · Immersive Sim · Survival

V Rising
Shared: PvE · Character Customization · Survival

Black Desert
Shared: Exploration · Sandbox · Character Customization

Pax Dei
Shared: PvE · Sandbox · Exploration

Valheim
Shared: Survival · Exploration · PvE

Disney Dreamlight Valley
Shared: Character Customization · Exploration · Sandbox

Soulmask
Shared: PvE · Survival · Crafting

Mount & Blade II: Bannerlord
Shared: Character Customization · Sandbox · Medieval

Tainted Grail: The Fall of Avalon
Shared: Character Customization · Exploration · RPG

Abiotic Factor
Shared: Exploration · Survival · Crafting

Project Winter
Shared: Team-Based · Exploration · PvE

Once Human
Shared: Exploration · Survival · Action

ICARUS
Shared: PvE · Exploration · Survival

Mortal Online 2
Shared: Character Customization · Sandbox · Exploration

Salt 2: Shores of Gold
Shared: PvE · Exploration · Survival

The Elder Scrolls Online - Standard Edition
Shared: Exploration · Character Customization · PvE

Windrose
Shared: PvE · Exploration · Survival

EVE Online
Shared: Exploration · PvE · Adventure

7 Days to Die
Shared: Survival · Exploration · Sandbox

Baldur's Gate 3
Shared: Character Customization · CRPG · RPG

VEIN
Shared: Exploration · Survival · Sandbox