From the back of the book:
Live Roleplaying without borders
Live action roleplaying is the wave of the future. More systems are being produced every day. But if you wanted to play a game of gothic horror and then a space opera game, you used to have to learn two different systems.
Rules To Live By is designed to work with any genre. Rules To Live By lets you create your game without worrying about the mechanics or giving your players the headache of learning a new system for every game. And Rules To Live By is easy to learn and use!