The purpose of the International Puzzle Party is to provide an annual forum for serious puzzle collectors for the exchange and sale of mechanical puzzles, books and related items, as well as for fun and fellowship. In short: puzzling fun for puzzle enthusiasts. International Puzzle Parties have been held almost every year since 1978. IPP's are usually organized in three-year cycles in the USA, the Far East, and Europe. 100 puzzle designers create 100 copies of their puzzle and pass it out at the party and exhange them with the other attendees.