Which gaming company first introduced an in-game virtual marketplace that allowed players to purchase cosmetic items using real currency?

The gaming industry has transformed how products are sold and marketed to consumers. From physical cartridges in specialty stores to digital marketplaces and virtual item shops, gaming retail has evolved dramatically. This poll tests your knowledge about a significant milestone in gaming retail history that changed how gamers purchase and experience games.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Valve Corporation (Team Fortress 2's Mann Co. Store, 2010)
Electronic Arts (FIFA Ultimate Team, 2009)
Blizzard Entertainment (World of Warcraft Pet Store, 2009)
Microsoft (Xbox Live Marketplace Avatars, 2008)