From the introduction:
The game is about flexibility & common sense adjudication by the Judge running the game, with player input, in order to tell a collaborative story.
Everyone is playing LBH for the common goal of having fun.
The rules-light game assumes a generic fantasy genre (with magic and monsters), but the rules are flexible (and simple) enough to easily adapt to any genre. The document includes a print-and-play character sheet and also includes the rules in miniature for printing on a series of pocket cards.