CORE (Fangamer Demo Version) - Undertale

"CORE (Fangamer Demo Version) - Undertale" is a high quality rip of the Fangamer demo version of "CORE" from Undertale.

Jokes
At 0:07, the advertised track is mashed up with "Space Jam".

The video uses an edited version of the thumbnail with the title changed to read "UNDERSLAM!" and an Annoying Dog with Charles Barkley's face superimposed over it added to the bottom right. This is likely a reference to the rip "Uwa!! So Holiday♫ - Undertale", which featured a similar image.