Endless Winter is a euro-style game that combines worker placement and deck building in an innovative way. Each round, players send their tribe members to various action spaces and pay for the actions by playing cards and spending resources. Tribe cards grant additional labour, while Culture cards provide a variety of unique effects. As an alternative, cards can be saved for an end-of-round Eclipse phase, where they are simultaneously revealed to determine the new player order, and trigger various bonus actions.

Rivers & Rafts is an expansion for Endless Winter: Paleoamericans. It adds new modular tiles to the terrain map, including riverways and unique starting locations. It also introduces landmarks which tribes can control to gain powerful Eclipse phase benefits.