Prepare for a trip back in time to the dawn of the Mesozoic Era, where Earth underwent a brutal ecological upheaval! In American Megafauna, you'll dive into the struggle for survival between dinosaurs and mammals right after a mass extinction that wiped out 96% of species. The game simulates this epic battle for planetary dominance, focusing on ecology, evolution, and, of course, DNA!

You start with a basic archetype, but the real magic happens when you use auctions to acquire genotype and DNA cards. With these, you can create bizarre and unique creatures – think horned crocodiles or saber-toothed camels! The currency for these auctions? Gene coins, drawn from a "gene pool" representing genetic potential. The game supports one to four players, and the advanced version adds an extra layer of realism with climate events, greenhouse level changes, and astronomical cycles affecting the continent of Laurentia. Biomes like swamps, deserts, and ice sheets emerge and shift, making each game a new evolutionary adventure. It's a deep and strategic experience for those who enjoy ecological simulations with a touch of prehistoric weirdness.