Tony Hawk's Underground is a skateboarding-adventure video game published by Activision in 2003, the fifth entry in the Tony Hawk series.

Underground is built upon the skateboarding formula of previous Tony Hawk's games: the player explores levels and completes goals while performing tricks. The game features a new focus on customization; the player, instead of selecting a professional skater, creates a custom character.

Underground adds the ability for players to dismount their boards and explore on foot. The plot follows the player character and his or her friend Eric Sparrow as the two become well-known professionals and grow apart.

In this run, The Packle improves upon the previous publication by over three and a half minutes thanks to a new glitch involving custom tricks which eliminates most of the RNG this game has to offer.

You can check out this video for of a video of the run with live commentary from the author himself.