but the first shot at them on the Western side of things was Valve's Team Fortress 2. In June 2011, Valve transitioned the game to a free-to-play business model after the launch of the Mann-conomy update in 2010, which introduced crates and item trading. MMOs that fell on hard times, like Star Trek Online and Lords of the Rings Online, switched to the model when they went free-to-play as well.
"which games"
The multitude of incest games that litter Steam's new releases?