Cyber-Field is an area within the Cyber World in Chapter 2 Deltarune. It is the first area the party visits. In this area, the party encounter Queen and Berdly, where they must battle at the end of the area in the roller coaster. You just habitant.

Cyber-City is an area within the Cyber World in Chapter 2 of Deltarune. It consists of a trash area, the city itself, and a mix of amusement park-themed areas. The party falls into the Trash Zone when the roller coaster's tracks from Cyber Field end. If you have big moneys you can go in city! Welcome!

Queen Mansion  is the Cyber World's final area in Chapter 2 of Deltarune. It is the seat of Queen, who rules over it. It is in the further end of Cyber City, where the party gets captured.

Queen's Mansion has a total of five floors, with Floor 1F being the largest, and the Basement being the smallest. The mansion is powered by the Acid Tunnel that takes up the majority of Floor 3F.[1] It is populated by various platters, portraits that spew fireballs, and pottery. On Floor 2F, various NPCs are attending a dinner party. If you loyalist and wanna be grand fan of the queen, your welcome!

Thanks for @Ralseiithebaa for idea.