Much like Super Mario Bros. and Sonic the Hedgehog, Doom is a name that people who "know nothing about video games" recognize. It's one of the industry's most influential and longest-running franchises—27 years and counting—spawning several games, novels, a comic book, and two movies of questionable quality. While it's true that Doom was not the first FPS, it is rightly considered the granddaddy of the genre; a claim few games can make. In this feature, we look at each entry in the series from development to reception, starting with the seminal original and ending with Doom Eternal's expansions. "They are rage, brutal, without mercy. But you. You will be worse. Rip and tear, until it is done."