I've seen a lot of strange runs through many different games, but this one ranks as one of the most bizarre. When Bethesda's Fallout 3 begins, players go through a process to create their character. While most games relegate this to playing with sliders and moving stat points around, Fallout 3 allows players to "grow up" as their character, seeing different stages of their lives as they become adults. That process ends when the player enters the wider, blasted landscape of a post-apocalyptic Washington D.C.
A couple years ago, players discovered it was possible to glitch through the baby section of Fallout 3's opening and escape from the underground Vault before events flash forward to when the player's character becomes an adult. The fact that the glitch exists is in itself is entertaining, but one player decided that they would play through the entire game as an infant. And, well... this happened.
YouTuber Bryan Pierre walks viewers through his attempt to finish Fallout 3 as a baby. It's actually pretty fascinating to hear him talk about the details of how this works and how strange the game's implications become when the protagonist is a tiny baby. For example, the baby's hit box is much smaller than normal, so many enemies can barely hit a crawling child.
The video itself is about two years old, but it is very much still worth a watch to see just how far some people are willing to go to do obnoxiously silly things in video games.