Games like ReTrime
Games like ReTrime include Far Cry 3, S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition, Fallout 4, Rust, and Far Cry® 6. We matched them by the tags players give ReTrime on Steam (Open World, FPS, Sandbox, Nonlinear, and Perma Death): closest matches first, and among equally close ones the better-known games.

Far Cry 3
Shared: Open World · FPS · Action

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

Fallout 4
Shared: Open World · FPS · Shooter

Rust
Shared: Open World · Sandbox · FPS

Far Cry® 6
Shared: Open World · FPS · Shooter

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

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

Far Cry® 2
Shared: Open World · FPS · Shooter

Far Cry® 5
Shared: Open World · FPS · Shooter

Destiny 2
Shared: Open World · FPS · PvE

GoreBox
Shared: Sandbox · FPS · PvE

Arma 3
Shared: Open World · Shooter · FPS

Metro Exodus
Shared: FPS · Open World · Action

Just Cause 2
Shared: Open World · Sandbox · Action

Grand Theft Auto V Enhanced
Shared: Open World · Action · Shooter

DayZ
Shared: Open World · FPS · Shooter

Freeman: Guerrilla Warfare
Shared: FPS · Open World · Sandbox

Slime Rancher
Shared: Open World · Sandbox · Exploration

Halo Infinite
Shared: FPS · Open World · Shooter

Far Cry® New Dawn
Shared: Open World · FPS · Action

Terraria
Shared: Sandbox · Open World · Adventure

Just Cause™ 3
Shared: Open World · Sandbox · Action

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

Bright Memory
Shared: FPS · Open World · Shooter