Games like GreenIsland
Games like GreenIsland include Once Human, Rust, The Forest, Arma 3, and Call of Duty®: Warzone™. We matched them by the tags players give GreenIsland on Steam (Action, Sandbox, Shooter, Free to Play, and Exploration): closest matches first, and among equally close ones the better-known games.

Once Human
Shared: Free to Play · Action · Open World

Rust
Shared: Sandbox · Survival · Building

The Forest
Shared: Survival · Action · Building

Arma 3
Shared: Action · Shooter · Military

Call of Duty®: Warzone™
Shared: Free to Play · Action · Shooter

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

Fallout 4
Shared: Exploration · Shooter · Open World

Halo Infinite
Shared: Free to Play · Action · Shooter

Apex Legends™
Shared: Free to Play · Shooter · Action

Call of Duty®
Shared: Shooter · Action · First-Person

Terraria
Shared: Sandbox · Survival · Exploration

Far Cry® 2
Shared: Action · Shooter · First-Person

Ravenfield
Shared: Shooter · Sandbox · Action

Garry's Mod
Shared: Sandbox · Building · First-Person

Just Cause™ 3
Shared: Action · Shooter · Sandbox

Scrap Mechanic
Shared: Sandbox · Building · Survival

Far Cry 3
Shared: Action · Shooter · Open World

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

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

Far Cry® Primal
Shared: Action · Survival · First-Person

PUBG: BATTLEGROUNDS
Shared: Shooter · Action · Survival

ARK: Survival Evolved
Shared: Survival · Action · Building

Core Keeper
Shared: Exploration · Sandbox · Survival

Just Cause 2
Shared: Action · Sandbox · Shooter