How to play: each turn, play one card. Four eras — Bombardment (build mass & sky), Deluge (raise the seas), Awakening (seed life — it needs water and a gentle climate), Evolution (grow life to a thriving world). Climate drifts toward whatever your atmosphere dictates, and the void throws events at you. Life that sits outside its comfort bands for two straight turns withers. Finish Evolution with a living, habitable world — the deader the rock, the sadder its name.