From publisher blurb:
Darwin's World is a role-playing game set in the wild, inhospitable world of mankind's ruin, after a series of devastating wars that brought the human race to the brink of extinction. In a world where radiation has altered the very course of nature, mankind has ceased to exist in its current form. Mutations and genetic variations are the edge separating a species from life and death.
The premier d20/OGL post-apocalyptic roleplaying game now for the True20 System.!
So, what will you find in this tome of Post Apocalyptic goodness? (Beside radiation sickness)
Post Apocalyptic Characters
New rules for creating post fall characters including: 11 Backgrounds, 8 Character Paths, and 22 New Feats.
New Mutation System
A new multi-level mutation system allows for a wide variety of flavorful mutants. With 50+ mutations, 25+ defects, and new mutant feats, no 2 mutants need be alike.
Artifacts of the Ancients
Discover a horde of new equipment and gear developed by the Ancients. New futuristic firearms all completely illustrated! New weapons include: modern firearms, lasers, masers, energy field generators, mass drivers, and other unconventional weapons. Also included are new melee weapons, explosives, advanced armor, powered armor, advanced medicines, advanced electronics, professional equipment, military hardware, and survival gear.