The Last Autumn serves as a pivotal prequel expansion in the Frostpunk universe, shedding light on the tumultuous events at Site 113 as it races against time to construct the Generator before the world succumbs to an eternal winter. This expansion enriches the game's lore and narrative while introducing a new environment untouched by snow, allowing players to shape their society and city in innovative ways. As the leader of Site 113, you are tasked with managing engineers and addressing extraordinary challenges, from dealing with toxic gases to handling worker strikes.

Players will experience game-changing mechanics, including two new Books of Laws that offer unique societal influences, a new technology tree to explore, and 25 distinct buildings to construct, such as docks and telegraph stations. The Endless Mode variant, titled Builders, presents fresh setups and challenges to overcome. New social classes, including Convicts, provide alternative workforce dynamics, allowing for creative societal manipulation.

Join the struggle to prepare civilization for the harsh realities ahead—hope for the best, but always prepare for the worst.