Introducing the final expansion to Petrichor, Petrichor: Cows gives the highly interactive cloud-faring strategy game new concerns with a decidedly bovine spin: a new action, a whole new climate mechanic and a fresh set of crop tiles. With cows in the picture, so are their various byproducts; manure, improving the quality of crops, and methane gas, affecting the world climate. The graze action allows players to influence the cows, and nudge the world's climate in favor of the crops they intend to grow. With climate, comes an all-new set of climate sensitive trees; the Norway spruce, the baobab, the date palm and the sweet chestnut. Petrichor: Cows can be combined with any of the previous expansions Petrichor: Flowers and Petrichor: Honeybee to created some truly memorable cloud-slinging, water-sprinkling action. The expansion content is also supported when using the southern winds solo mode.