Green Hell , developed by Creepy Jar , is an open-world survival simulator that places players in the heart of the Amazon jungle. The game distinguishes itself through extreme realism, focusing on "micro-management of nutrients" as a core survival mechanic.

The "Online" component of Green Hell primarily refers to its , allowing players to survive together in the Amazon.

: Minor injuries like scratches and abrasions must be treated with specific bandages (e.g., tobacco or honey dressings) to prevent infection.

The title emphasizes physical and psychological endurance. Players must utilize real-life survival techniques, such as starting fires, building camps, and crafting tools.