Tonight, I finished a replay of Valve Entertainment’s video game Portal 2, which was deeply satisfying.  Portal 2 is one of those rare games that greatly improves on its original, and I enjoyed going through the story again and interacting with GLaDOS, Wheatly, and Cave Johnson.

After I finished, I did some poking around on the net for bits of information, and came across this video of two of the game’s lead designers, discussing its development at a game developer’s conferance around the time it was originally released.  Some fascinating shop talk about how the project evolved.