Video game power harnessed for positive goals

As a gamer, I agree that games really help improve my cognitive skills and reaction times. I like shooters and adventure games like Uncharted. I have to admit though, there are some really f-ed up games out there that are unnecessarily violent and bad for society. To judge the whole industry by a few bad apples is absurd.

Not judging the whole industry, just all the recent mass shooters, all violent gamers. The smoking in movies has been removed as too influential on youth, but violent games with "points" to win by killing are reving up killer from Colorado to Connecticut.