The core rules for the Age of Heroes roleplaying game. From the opening:
"Age of Heroes is suited to those campaigns desiring a high level of detail to simulate the works of High Fantasy or Sword and Sorcery genres. In particular the goal is a game that supports campaigns covering generations of adventures, across decades of time. Players could eventually run out of grandchildren of their original characters.
"We don't brag about 'simple and easy' rules. They aren't here. Age of Heroes is for those who desire highly detailed and tactically rich environments in which to game. You don't get that with 'simple and easy.'"