I watched a TEDx talk about one of the benefits of gaming once.

In the lab, Bavelier and her team measure the impact of gameplay on the brain. While your mom might have told you that staring at screens will wreck your eyes, Bavelier’s lab actually found that playing 5 to 15 hours a week of video games correlates with better vision — and the ability to see more detail in the context of clutter.
And a link to all the videos from TED: http://blog.ted.com/7-talks-on-the-benefits-of-gaming/