The RiftsSet out on another journey through the frozen wasteland with this mini-expansion, adding a new endless mode map and a new constructible building The Bridge. Expand the city to save your people from inevitable doom!This is merely an introduction to two major expansions, the first of which - The Last Autumn - will become available later this year and it will introduce a brand new scenario, along with game-changing mechanics and unique architecture.unique new Endless Mode mapnew constructible building The Bridgenew gameplay mechanics