This document provides an overview of games and game studies. It defines what constitutes a game, including elements of play under constraints, occurring in a "magic circle" separate from everyday life, and having no material benefit. The etymology of "game" is discussed. Johan Huizinga and Roger Caillois contributed influential definitions of games involving elements of competition, chance, emotion, and role-playing. The document traces the long history of games back to ancient cultures and discusses more modern forms like wargaming, family games, and role-playing games. It also examines big themes in game studies like storytelling versus mechanics and the role of randomness and information in games.