Nardi gives a great explanation about how people put their own intelligence to work in video games. Many people seem to believe that playing video games is a very passive activity that does not require much thinking. This may be true for some games or for some style of play, but a majority of intense gameplay involves a lot of thinking. Anyone that is devoted to a specific game spends a decent amount of time thinking about it. A lot of this is thinking about how the game works or how a character or combination of things can be improved. This is where our brain power comes in. World of Warcraft does not give specific details about certain things, so devoted players have done their own research to find answers to unsolved questions. While for the gamer, this is just an answer to help improve the character, for the mind, it is a puzzle that involves critical thinking. For example in Skyrim, the NPC enemies often level along with you, making them stronger as you get stronger. People have come up with formulas to calculate how much damage an enemy will do based on your level. If you look at this link you can see information of the final boss of the main quest. His level is 1.2 times whatever yours is and his health is part of a somewhat complex formula based on that. This type of information can be figured out through research and personal knowledge. Finding out information like this is very similar to a scientific method experiment, but people are willing to do this on their own free time for no gain but their own knowledge of the game. If classes used this type of thing more, perhaps students would be more interested in the material.