Start as a plant or animal making first landfall half a billion years ago, then evolve it on drifting continents in the face of competition and huge ecological events: Win if become the dominant herbivore or carnivore

In the full game you can grow from 200 grams to 20 tonnes. The atmosphere is tracked for oxygen, cloud cover, and greenhouse gases, and the decisions the players make influence the climate.

In Bios: Megafauna, a reworking of Phil Eklund's own American Megafauna, players start as proto-dinosaurs or proto-mammals, starting in the post-holocaust world of the Permian catastrophe. Animals are tracked by dentition, size, aggressiveness, swiftness, browsing, grazing, burrowing, swimming, behavior, and insect-eating. Plants and animals that have gone extinct are collected in an area on the map called the tarpits. These tiles are distributed among the most populous players as victory points during four scoring rounds.

Players cope with intense competition and environmental changes by starting new species and mutating them. Create bizarre chimeras, from vegetarian velociraptors to flying dolphins. Establish subterranean civilizations, tame fire, or just be super-sexy.

Game Contents:

• 92 Mutation cards
• 51 Event Cards
• 13 Game Cards
• 8 Craton Placards
• 3 Latitude Strips
• 1 Reservoir placard
• 16 Fossil Tokens
• 16 Monster Tiles
• 140 Creeples
• 110 Wooden Cubes
• 42 Disks
• 24 Dice