Food Chain Farm is a construction game in a farm environment, with a tinge of biology education.
In the beginning, you see a pig, floating in a box in space. It needs food and oxygen to survive. A bit further, there is another box with an apple tree. Connect the two boxes and transport apples and oxygen from the tree to the cow. At the same time, bring water and carbondioxide back. Thus, you form a sustainable loop. Animals and plants living together, each producing what the other needs.
Over the course of the game you build more and more complicated networks connecting plants and animals. In later levels you craft farm products into apple pies to satisfy the desire of feckless people.
Early access previews are currently available. The game is planned to go on sale early 2019