Content pack

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Expansion packs (EP) are kinds of add-ons for games. They make the original game more interesting by providing new things to the game, and are often centered around a theme. They require the original game (also known as base game) to work. Sometimes, collections or compilations of the base game and one or more expansion(s) are released. The Sims 2 and The Sims 3 also offered mini-expansions called stuff packs (SP), which offered only new objects and clothes and on few occasions new gameplay changes as well. Gamers are advised to check what an edition includes before buying it.

The Sims
In the Sims there are 7 expansion packs, they are:
 * Livin' Large
 * House Party
 * Hot Date
 * Vacation
 * Unleashed
 * Superstar
 * Makin' Magic

Sims 2
The producers brought out 8 different expansion packs, they are:
 * University
 * Nightlife
 * Open for Business
 * Pets
 * Seasons
 * Bon Voyage
 * Free Time
 * Apartment Life

Sims 3
So far they there are only 3 expansion packs for the lastest game although there are more still on the way. These are the three:
 * World Adventures
 * Ambitions
 * Late Night
 * Also, a pack that comes with Sims 3 and Ambitions altogether

Themes
Each expansion pack for The Sims is centered around one or more themes. Go to Theme to see a list of themes.