Feed your fire, but don't let it consume the forest.
Hearth is a survival game where the player must feed their life-sustaining fire. Everything in the world burns: causing entropy as the hearth consumes the surrounding environment. How the player uses fire has trade-offs: it can be a weapon and a light source, used for crafting, or fed to the hearth to regain energy. With limited daylight and energy to find fuel players must carefully manage what to preserve and what to sacrifice.