Unreleased neighborhoods
There have been several neighborhoods made by Maxis and Electronic Arts for The Sims 2 and The Sims 3 that were never released to the public. Riverside and Waterside were used in previews for the pre-released The Sims 2 but never released. Two versions of Sunset Valley were made but due to the delay of the release of The Sims 3, additional changes were made.
The Sims 2
Riverside
Riverside was originally set to come with The Sims 2 base game, but many changes caused it to be removed. Although there were no specific families that were scheduled to come with it, there is a high speculation that families in the various previews may been the inhabitants of Riverside. A recreation of Riverside has been attempted by Thsms204.
Waterside
Waterside was a neighborhood based for previews of The Sims 2. It was created by Tim LaTourneau. It was originally set to come with The Sims 2 base game, but many changes caused it to be removed. It is the assumed home of various Sims including Dina (similar to Dina Caliente ), Laura, and Tina (all past girlfriends of Don Baxter). It is known to be the home of The Baxters, Virginia, and many other relatives to the Baxters.
The Sims 3
Even though Sunset Valley was shipped with the game, two versions were made but never released. The first version was made in March 2008 but was revamped. Then the second was made after that and was supposed to release in February 2009 but was delayed. Because of this, EA decide to change the neighborhood up a bit.