BarbieGirls.com was an online virtual world created by Mattel, based on the Barbie brand. It opened on April 24, 2007, and eventually closed on June 1, 2011. International versions of the site closed on April 30, 2011. Mattel also released a line of MP3 players that looked like avatars from the website, these devices came with a free VIP membership for the site. Each player had their own avatar, for which they could purchase clothes and accessories using B Bucks, the in-game currency. Players also each had their own room, which they could purchase "furni" for with their B Bucks. The game was free-to-play, but members could purchase a VIP membership, which provided access to more locations, mini-games, and items.