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The trade of in-game items and skins spread beyond TF2 and turned into a lucrative market. The next year, Valve realised they could make more money selling hats than they ever could selling games-and decided to make TF2, then one of the most popular multiplayer games in the world, free-to-play.īy releasing their game for free, Valve gained four times its player base-and 14 times its revenue.

In 2010, Valve allowed hats to be purchased with real money.
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Hats very quickly became prestigious to own, and Valve very quickly started allowing the player base to design and trade their own. To get a hat, you had to complete a set of challenges or play the game long enough to receive it via a randomised “drop”. They served no practical purpose besides changing the look of your player: They could be cool they could be funny. In 2009, Valve introduced hats to Team Fortress 2.
