"Megalovania" is the Greek word for "Megalomania", which means "obsession with the exercise of power, especially in the domination of others". It is also the name of the song played when you fight Sans in Undertale. The song might be called this to relate to the abuse of your power to reset and alter the timelines.
Megalovania is the song that plays when you fight Sans. The final boss of the Genocide Route of Undertale. The word means the feeling of sins crawling on your back.
The song that plays when you fight Sans in undertale, genocide route.
Undertale is a game about a human that has fallen into the underground. Long ago, the humans and monsters went into war. Humans won, locking monsters into the underground. It is said that seven monster souls are equal to ONE human soul, so it's obvious why they lost.
G1:"Dude! I just beat Sans!"
G2: "Nice, how long did it take?"
G1: "Hours... I'm SICK of Megalovania, though."