Radiation Island is a first-person open-world wilderness and zombie survival game. The story begins with you waking up on a mysterious island in an alternate reality to discover it is occupied by 1940's Japanese forces.
You basically have two objectives, your first one is just to survive. In order to do this you will need to manage your health bar and and find sources of food to eat so you don't die of starvation. This will mean crafting tools such as slingshots and bow and arrows so you are able to catch rabbits and fish. You will also need to craft clothing to provide protection from the night's cold.
The second objective is to disable the electric Tesla towers that are on each of the islands you can reach by crafting a canoe or a glider. What these towers are and what their purpose is will be steadily revealed through the journal pages you find. To shut each of these stations down means finding the six digit codes and not getting killed by the zombies that guard each one of them.
Radiation Island is also available on PC and Switch