Campaign Extensions defines rules GMs can use for ongoing game play that lasts longer than one session or adventure. Things like how time passes, how Actors advance or make money in the game.
Extension Summary:
Depends On –Core Rules
Problem Solved–facilitates long term play in a game world spanning large areas and long periods of time.
Mechanics Added–Time, Employment, Actor Advancement, etc.
What Changes–rules replace whim and pure imagination when defining what happens in the world over long periods of time or distance.
Complementary Extensions– People, Places & Things