A portion of a review by GamePro (thanks for the link, SimSisters!)
Overall, World Adventures adds so much new content and gameplay that it feels more like a sequel than an expansion pack. Sims fans everywhere, from the casual to the hardcore, will absolutely love all of the new additions that are packed in here. World Adventures is guaranteed to impress — it may just be the most ambitious expansion in the franchise yet — and it will add hours upon hours of new areas to explore and new Sims to meet.
