In just a couple of days there have been a whopping 35,000 maps made by fans of Portal 2, Valve reported.
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There have been more than 1.3 million downloads collectively since the release of the new level editor: Portal 2 Perpetual Testing Initiative.
As a celebration, Valve have reduced the price of a load of games on Steam. Portal 2 is up for grabs at just $6.79, The Elder Scrolls V: Skyrim has been reduced to $40.19 and a ton of Team Fortress 2 Workshop items are reduced by 50%.
There’s more information on the Perpetual Testing Initiative over at the Steam Workshop site.