Sans Undertale would be proud.Late into the circus segment, the song that backs Undertale's boss fight with Sans plays and nobody bats an eye. This jazzy, trumpet-filled version of "Megalovania ...

As veteran Undertale fans know, the “genocide” route of the RPG pits players against the hoody-wearing skeleton at the end of the game. It’s a memorable fight, not only because it’s Sans ...

Omega's standard entrance video was interrupted with a dialogue scene in the style of Undertale - with custom graphics and authentic talking noises - where Sans offers to tag in.