I completed this game about a week ago, which is part of the compilation pack The Orange Box for Xbox360.

The first 10 levels or so go extremely quick, but then 13-19 take awhile and are significantly more complex. There is only about 3 hours of gameplay total for one run-through… well, that is just what the save game said. It took me a lot longer with dying and thinking about how to solve the puzzles.

This game is just so innovative, and you’re really forced to be creative with the portal gun to get through. If you get stuck, try gamefaqs.

I absolutely love the personalities that come through in the game; the AI has to be one of my all time favorite game characters. And the song playing during the game credits is hilarious (which can be found on YouTube if you’re impatient).