A new feature for users of Valve's popular Steam service that allows in-game items and gifts to be traded went live Tuesday.
The feature, called Steam Trading, started an open beta
about four weeks ago with support for the company's Team Fortress 2
Today's public release
has added support for another popular Valve title, Portal 2
, as well as a third-party title, Three Rings and Sega's Spiral Knights
According to Valve, over 1 million virtual items were traded or gifted during the beta period.
Valve introduced a popular virtual item storefront for Team Fortress 2 last year
The game recently went free-to-play
, and is running on a business model supported solely by these virtual item sales.