TV World is the fourth Dark World of Deltarune, taking place in Chapter 3. It's an In-Universe Location with various sections, but in general it's depicted with televisions, posters, Red Carpet floors, spotlights and crowds.
Locations
TV Time
A Game Show where the Fun Gang are subject to various minigames by Tenna.
The Green Room
A green colored break room, with the walls having a star wallpaper.
TV World
The main zone of TV World.
The Cold Place
A snowy area. TV World's Dark Fountain (Deltarune) can be seen from a distance in this area.