Reforest: Old Growth expands the original game and acts as a storage solution for the Reforest series. It can be combined with Reforest: Plants of the Pacific Northwest Coast or played as a standalone game. New elements introduced in this expansion include: Old growth trees than can reveal previously covered effects and regenerate stored plants. Parasitic plants that can be played freely but feed off of existing plants. Terrain cards that offer growing benefits to your elevation rows. Reforest: Old Growth adds complexity. New players should begin with the original game; Reforest: Plants of the Pacific Northwest Coast.