New research paper published today on PLOS One just now, that might be relevant to our interests.
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0068382
We failed to find evidence that playing video games affects prosocial behavior. Research on the effects of video game play is of significant public interest. It is therefore important that speculation be rigorously tested and findings replicated. Here we fail to substantiate conjecture that playing contemporary violent video games will lead to diminished prosocial behavior.
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0068382