Game description from the publisher:
One to four players start as organic building blocks in the primordial soup, specialized in one of four pre-biotic functions: cellular, metabolism, reproduction, or energy management. These correspond to fats, proteins, sugars, and pigment respectively.
Bios: Genesis, a prequel to Eklund's Bios: Megafauna, can be played in a cooperative "Gaian" or competitive "Medean" mode. Players can swap genes, or become internal parasites or symbionts.
With Bios: Genesis, Bios: Megafauna, and Origins: How We Became Human, designer Phil Eklund takes players through almost the whole breadth and scope of life on Earth.