Three new songs from UNDERTALE have been added to DDR A3 as of August 10, 2023.

「Battle Against a True Hero / Toby Fox」
「Death by Glamour / Toby Fox」
「Finale / Toby Fox」

In addition to the update, purchasing the UNDERTALE DDR GRAND PRIX music pack will unlock CHALLENGE charts to all the new songs plus adding MEGALOVANIA to DDR GP.