The Cake is a Lie.

This week I bought The Orange Box for Xbox 360 and have been playing a game called "Portal." It is probably the most intelligent game I've ever played. It has a gun but it's not a shooting game; The gun shoots the wall to create portals to other areas.

The game has an incredible physics engine that allows you to gain momentum by creating infinite portals. The premise of the game is to see what the test subject is capable of when offered a reward for successful completion of the test chambers. That reward is a piece of cake. In one chamber, you can find a section on the wall where another test subject has carved in the words "the cake is a lie" over and over again.

What I liked most about the game is that it makes you really think to try to figure our how to complete the puzzle. There are countless ways each puzzle can be solved so you can keep replaying the game but find a different way to win each time.