The Undead Fiesta is the penultimate world in the 3DS verion of Skylanders: Swap Force. It is the area of The Underworld ruled by Count Moneybone, acessed through a coffin door left at Boom Town or at his Clockwork Castle. It is an expansive desert chain of islands, which appears empty and desolate at day, but turns vibrant and "lively" in its nighttime festivities. Flynn, Hugo and the Skylander find there the help of The Ferryman in their attempt to stop Moneybone and rescue Cali.
- The Party Town
- Down the River
- The Haunted Villa
- This world appears to be based on Mexican concepts of afterlife, as a land where the passed celebrate.
- This is the only area from a 3DS game to have a level later in a console game.