The atrium is a large dark purple room with blue accents. It has 3 floors and serves as the gateway to all the locations of the Pizzaplex. A neon star on top illuminates the whole place, along with other lights.
It has many tables for the main dining area with a stage that the Glamrock Animatronics preform on.
This contains logos for the various attractions. Frankly, these also lead to these respective attractions. These being Fazer Blast, Kid's Cove, Monty's Gator Golf, & Roxy Raceway. It also contains the party check-in booth. It also has the food courts for fried treats, drinks, burgers, pizza, ice cream, pasta, salads & sides.
The lobbies to the aforementioned attractions in the first floor take up 2 floor, with a hallway in the middle. There is also a shutter next to Kid's Cove which would lead to the Superstar Daycare. It also has the elevators to the Lobby Entrance, infront being a directory of the various attractions of the Pizzaplex with a save station which appears post-game if the Stay option is considered. There are also hallways to the Glamrock Beauty Salon, another Roxy Raceway entrance (there is one in it's lobby, yet is blocked off), & Cupcake Shop.
- Roxanne Wolf and various Security Bots roam the area naturally, but Glamrock Chica, Montgomery Gator, and Vanny can also appear here in an event where Gregory must start a performance to get Glamrock Freddy to Parts and Service. Monty's appearance in the area for most of this event makes use of a spotlight he can shine on Gregory, rather than directly pursuing him.
- Depending on the hour, various barricades will be erected in some areas of the atrium so Gregory can only take certain paths towards a current objective. These barricades can often block certain escalator paths between floors.
- Vanny will occasionally appear on screens around the atrium.
- From 1.05 patch, there is a Save Station on the right the elevator going to 2nd floor, but it's just can be use after 6 AM.