User blog comment:Lost Labyrinth/Your favourite expansion pack of the entire series?/@comment-24502382-20140127215711

For The Sims 1, I'd say my favorites are Unleashed and Superstar.

For The Sims 2, my favorite would be University.

For The Sims 3, my favorites are Late Night, Pets, Supernatural, and Island Paradise.

Overall, my favorite EPs are in The Sims 3, but I can't choose which (out of my favorite TS3 EPs).