The Cambrian period was an explosion of complex lifeforms. These included arthropods, which crawled from the oceans to dominate the terrestrial world as insects, arachnids, and crustaceans. Bios:Mesofauna is their story.

The game starts with the invasion of the land about 450 million years ago and is an Alternate 2nd Game in the Bios Trilogy. It follows the same sort of Achterbahn environment, same climate change, same or similar creeples, same VP, same tiles, same card colors, same cratons and drift, same basic and Achterbahn games, same catastrophes, same greenhouse, cloudiness, and oxygen. Same terrestrial settings. All of these are production and development advantages. The setting is the same, only the animals are smaller. 

Contents:
Rule books
115 Cards
8 Map cratons
41 Punchout chits & markers
208 Creepies
110 Wooden cubes
4d8