While some folks take hundreds of hours to play through the Fallout series, someone has done Fallout 1, Fallout 2, Fallout 3, Fallout New Vegas, and Fallout 4 in less than an hour and a half. Yes, the person played them through consecutively and racked up a total time of 1:29:47 to finish all of them.
Yes, it's not a glitchless run, but the streamer does not use any console commands are any cheats to achieve this feat. Some of it is hard to follow, but hey, when you're speedrunning through the entire Fallout series, there's not much time to make sure you play it cohesively for viewers.
While I'm not a fan of glitchy speedruns, it's still a damn impressive feat and goes to show what you can accomplish when you put your mind to it.