As an expansion for the base game Frostpunk, The Rifts (released in 2019) enhances the survival city-builder by introducing a new core mechanic: building bridges to span environmental rifts. This requires players to strategically connect previously inaccessible areas of the frozen map to secure vital resources and expand their settlement. It integrates directly into the main game's challenging resource management loop, adding a spatial puzzle element to the desperate fight against the cold. This content requires the original Frostpunk title to play.