Games like God Test
Games like God Test include Warframe, SMITE 2, Mount & Blade II: Bannerlord, Mount & Blade: Warband, and Notes of Soul. We matched them by the tags players give God Test on Steam (Action, Massively Multiplayer, Strategy, and RPG): closest matches first, and among equally close ones the better-known games.

Warframe
Shared: Action · RPG · Massively Multiplayer

SMITE 2
Shared: Action · Strategy · RPG

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

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

Notes of Soul
Shared: Massively Multiplayer · Action · RPG

Last Oasis
Shared: Massively Multiplayer · Action · RPG

Freeman: Guerrilla Warfare
Shared: Action · Strategy · RPG

Neverwinter
Shared: Massively Multiplayer · RPG · Action

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

SMITE®
Shared: Action · Strategy · Massively Multiplayer

Once Human
Shared: Action · Massively Multiplayer · Strategy

Blood of Steel
Shared: RPG · Strategy · Action

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

Farever
Shared: Action · RPG · Massively Multiplayer

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

Hell Let Loose: Vietnam
Shared: Action · Strategy · Massively Multiplayer

Command & Conquer Red Alert™ 2 and Yuri’s Revenge™
Shared: Action · Strategy · RPG

Marvel Rivals
Shared: Action · Massively Multiplayer · RPG

DRAGON BALL XENOVERSE 2
Shared: Action · Massively Multiplayer · RPG

Star Trek Online
Shared: Massively Multiplayer · RPG · Action

Blue Protocol: Star Resonance
Shared: Action · Massively Multiplayer · RPG

Black Myth: Wukong
Shared: Action · RPG

ShellShock Live
Shared: Strategy · Action · Massively Multiplayer

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