Miniopolis

Miniopolis one of the major cities in SimNation. It is the location of The Urbz: Sims in the City for Nintendo Gameboy and DS. This city is mentioned in The Sims 2 for Gameboy advance. The main antagonist is named Daddy Bigbucks, he buys King Tower in Glasstown and then plans to demolish Miniopolis, then rebuild it with Ticket Booths, taxes, and more materialistic ideas.

Glasstown
This is where you start out (inside King Tower to be specific). You can't leave the tower, because it is the tutorial area. Your Urb gets arrested here and sent to Urbania Jail. It gets re-opened late in the game.

Urbania
Urbania is the 1st area (after tutorial) to be unlocked, it looks like a more rundown area and it is where you meet many new urbz.

Sim Quarter
Sim Quarter the 2nd area to be unlocked, the Sim Quarter is a farmer's market/pier. At the end of the last goal of the Sim Quarter, Daddy Bigbucks tosses you into the water.

Bayou
Your Urb wakes up here after being tossed into the water, and all the missions are about escaping and helping out the two residents.

Paradise Island
Paradise Island is a small island with a beach. It has a small store which sells tiki themed items, and a hammock for the Urb to sleep on.

Splicer Island
Splicer Island is only included in the DS version. After 50 days from helping Futo Maki in the ruins, Splicer Island will be rebuilt and now you can do all of the good stuff. Which includes Gene Splicing and Pet Contests.