I have never heard of this video game and I am glad I have never played it. After watching the video, http://video.google.com/videoplay?docid=-846592551728203166#, I was very surprised to see someone would actually make a game that was about a terrible tragedy. Although this game can show people who awful it is to do something like this it could also show students different ways to carry out their own plans of doing something as terrible as columbine.
http://en.wikipedia.org/wiki/Super_Columbine_Massacre_RPG!, This article talks about how the game was listed as one of the possible motiviating factors of the shooter after the 2006 Dawson College shootings. This game only increases the surrounding media about how video game violence is bad for our youth and out culture.