Uploaded July 2026 | Updated September 2026, 3 hours ago
A bit of an odd upload on my end, I know... (especially since I *really* need to catch up on some other soundtracks, COUGHcftkkCOUGH!) but I was going through my files and stumbled upon this old nostalgic Undertale AU theme I loved as a kid. Still do. Saw it was nowhere on Youtube other than having a 1hr upload, so here's the shorter one for viewing convenience ~
Credits -
NerdyLizardePerson is the original composer of this theme. Back in the day, they used to compose a lot of theme songs for the Underswap characters. They used to have a Soundcloud, but they've since deleted it... unfortunately, I have no idea where they are now, so I can't give a link to their social media.
The original creator of the Underswap AU and the accompanying Sans design is p0pcornPr1nce on Tumblr, who also drew the art used in this video. Their Tumblr is now deactivated. Even if I knew their current social media(s), I wouldn't put a link to them, as they don't want to be associated with their creation anymore. Still, credit where credit is due.
Description from the original post on Tumblr (aka, the birth of the Underswap AU): (posted October 21st, 2015)
"OK SO, I thought what if theres an AU in which the bros personalities are (somewhat) swapped??? let's call it, uh, _underswap?_ bc honestly one thing i love more than. passive chubby pun skeletons is HYPERACTIVE chubby pun skeletons that love to make taco's and share them with his brother"
A bit of an odd upload on my end, I know... (especially since I *really* need to catch up on some other soundtracks, COUGHcftkkCOUGH!) but I was going through my files and stumbled upon this old nostalgic Undertale AU theme I loved as a kid. Still do. Saw it was nowhere on Youtube other than having a 1hr upload, so here's the shorter one for viewing convenience ~
Credits -
NerdyLizardePerson is the original composer of this theme. Back in the day, they used to compose a lot of theme songs for the Underswap characters. They used to have a Soundcloud, but they've since deleted it... unfortunately, I have no idea where they are now, so I can't give a link to their social media.
The original creator of the Underswap AU and the accompanying Sans design is p0pcornPr1nce on Tumblr, who also drew the art used in this video. Their Tumblr is now deactivated. Even if I knew their current social media(s), I wouldn't put a link to them, as they don't want to be associated with their creation anymore. Still, credit where credit is due.
Description from the original post on Tumblr (aka, the birth of the Underswap AU): (posted October 21st, 2015)
"OK SO, I thought what if theres an AU in which the bros personalities are (somewhat) swapped??? let's call it, uh, _underswap?_ bc honestly one thing i love more than. passive chubby pun skeletons is HYPERACTIVE chubby pun skeletons that love to make taco's and share them with his brother"
