From publisher blurb:
Rally Heroes and Rewrite History.
Dash down the gaslit streets of Victorian horror or ride the dusty trails of the Wild West. Board the tall ships of the Spanish Main or raid the trenches of the Great War. in d20 Past, heroes can find excitement in any historical era from the Renaissance to World War II. Whether period-specific or pulp-flavored, the posibilities for adventure in the world of yesteryear are endless.