Yes you have to have the actual game for the expansion packs to work.
Chat with our AI personalities
The first expansion pack released was University.
If you are talking about installing a Sims 2 expansion to the Sims 1, it is impossible. You can only install the Sims 2 expansion packs into the Sims 2, not The Sims 1 or 3.
There are no mermaids in any of the Sims games or expansion packs.
you have to buy sims 2 buisness carreer expansion pack
Pets