Posts tagged puzzle-maker 
This is not a test: Portal 2 sales top 4 million, map editor DLC out today
Portal 2 has sold more than 4 million units worldwide since its launch on April 18, 2011, and Valve is slowly but steadily (mostly slowly) supporting it with new content, such as today's batch of DLC, the Perpetual Testing Initiative. The Perpetual Testing Initiative offers players a map-editing to...
