Valve Software claims that more than $2 million has been generated from Team Fortress 2 micro-transactions. The popular free-to-play team online shooter allows players to create, buy and sell virtual items to wear during matches. Apparently fans are fond of the system and are willing to spend real-world cash on luxury in-game items. Valve also said that it plans to update the system with a new interface to make it even easier for customers to create and sell virtual goods.
The original game was released way back in 2007 but has evolved over the years. This year Valve moved the popular game to the free-to-play model. With micro-transactions in place, it seems that the model is working well for Valve and for players.