There are currently 10 expansion packs, excluding 1 that is going to be released on late October. Below are the names of the expansion packs which is arranged according to the date they were released.
1) The Sims 3 World Adventures
2) The Sims 3 Ambitions
3) The Sims 3 Late Night
4) The Sims 3 Generations
5) The Sims 3 Pets
6) The Sims 3 Showtime
7) The Sims 3 Supernatural
8) The Sims 3 Seasons
9) The Sims 3 University Life
10) The Sims 3 Island Paradise
11) The Sims 3 Into the Future (Going to be released soon)
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There are eight expansion packs; University Nightlife Open for Business Pets Seasons Bon Voyage Freetime Apartment Life
Expansions: World Adventures Ambitions Stuff Packs: High-End Loft Stuff
The regular game has one, Double Deluxe has two. Most of the expansion packs are also one disk but some have two.
There are many reasons on why The Sims 3 lags sometimes. One reason could be that some of the computers that players use to play the game isn't so good. Another reason could be that you might have installed too many expansion or stuff packs on your computer.
2 disks . One for the sims 3 game . The second one for the ambitions expansion .