What's O.L.D. is N.E.W. Starter Kit

From the contents page: This starter kit introduces you to the What’s O.L.D. is N.E.W. game system, which is a set of game rules which powers the roleplaying games O.L.D. (a game of medieval fantasy), N.E.W. (a game of futuristic science fiction), and N.O.W. (a game of explosive contemporary action). These three games are all fully compatible, and are designed to be played either as standalone roleplaying games or mixed and matched to create different combinations.