In Endless Winter you travel back to 10,000 years BC. When you play the game, you take on the role of different tribal leaders leading their tribes through different eras. At the start of Endless Winter you are in charge of a hunter-gatherer group, which you must help develop into a civilized tribal community throughout the game. You do this by exploring, traveling around, expanding your tribe, hunting big game and building megaliths, large stone buildings.

Ancestors is an extension of the game Endless Winter: Paleoamericans. Ancestors cannot be played without the base game.

With the Ancestors expansion you add new tribes and animal species to the game. In addition, the culture cards add two new modules to the game: prosperity and struggle. The new Chieftain abilities included in this expansion make Endless Winter: Paleoamericans feel like a completely different game.