QuakeCon is one of the video game industry's oldest game gatherings. The first QuakeCon, the now-annual gaming convention that celebrates game franchises like "Wolfenstein," "Quake" and "Rage" — made by local studios such as id Software and Bethesda Softworks — happened in Garland in a hotel meeting room with only 50 people in attendance. This year's gathering at the much larger Gaylord Texan Convention Center in Grapevine had a special reason to celebrate. It marked the 25th anniversary of "DOOM," the bloody, highly stylized first-person shooter that became a gaming phenomenon and made id Software a major player in the video game industry. Naturally, QuakeCon 2019 was also dubbed "DOOMCon," featuring the first playable preview of the next game in the franchise, "DOOM Eternal," and other new games that players could try by making a demo reservation instead of waiting in ludicrously long lines. The weekend also featured a record-setting speed run that completed every "DOOM" game from every era, including "DOOM 64" for the Nintendo 64 console and the upcoming "Eternal."