Released in 1993 by id Software as a followup and improvement to genre pioneer Wolfenstein 3D, Doom lit the match that ignited the explosion of first-person shooters in the mid 90s. Although the genre has arguably gone through significant design changes since then, first-person shooters have retained their spot as some of the hottest selling, most popular and industry-leading video game genres to this day. But despite vast improvements in graphics, processing and realism, I’ve learned that no first-person shooter has managed to maintain the dedicated community that follows Doom and sequel Doom II. Beginning shortly after Doom‘s release with the public domain version of the Doom Editing Utility—a program developed by fans to create new Doom levels—the creation of WADs became not only a hobby for the masses but one of the earliest accessible means amateurs had to prove their design skills and break into the videogame industry. With the public release of the id Tech 1 source code in 1997, WADs became even more ambitious.