This book takes a look at the early days of first-person gaming and the video game studio system. It discusses the prototypes and the groundbreaking technology that drove the game forward and offers a detailed analysis of gameplay and level design. Pinchbeck also examines DOOM's contributions to wider gaming culture, such as online multiplay and the modding community, and the first-person gaming genre, focusing on DOOM's status as a foundational title and the development of the genre since 1993. Pinchbeck draws extensively from primary data: from the game itself, from the massive fan culture surrounding the title, and from interviews with the developers who made it. This book is not only the definitive work on DOOM but a snapshot of a period of gaming history, a manifesto for a development ethos, and a celebration of game culture at its best.