A mere year after Team Fortress 2 players set a new record for a single hat trade, with an absurdly rare Crone's Dome going for approximately $18,000 worth of keys, those crazy cats are at it again.

As for the Team Fortress 2 community, there are mixed opinions on how the book will be received. "It will most likely be cherished by the people at Valve," one poster on the TF2 subreddit wrote.

Through the looking glass: Since Team Fortress 2 implemented one of the earliest microtransaction markets in 2010, the game has captivated economists and observers alike, as millions of dollars ...