Continuing the night-time expansion trend that started with the original Sims, The Sims 3 now has a new download for the party-loving rock star in all of us. The Sims 3: Late Night Expansion Pack for the PC lets you explore the hectic craze of city life in a whole new way: with alcohol, clubbing, and blood-sucking vampires. Hey, they deserve a chance to party, too, just don’t let them near your Sims’ necks.