Bernie De Koven's foundational 1978 text, republished in 2013 with a new foreword by Eric Zimmerman. Explores what makes a game worth playing — not winning, but the quality of play itself. Develops the concept of the 'game community' and the 'co-liberated player' who is free to change the rules to keep everyone genuinely playing. One of the most influential texts in game design, play theory, and recreational philosophy.
