The final official Virginia state report by the Virginia Tech massacre review panel found no link between video games and the murders committed by Seung Hui Cho. This corroborates the federal government findings in June which found no link. Turns out that the only game cited in the report is Sonic the Hedgehog. In the mental health history section of the report regarding Cho it says, "None of the video games were war games or had violent themes. He liked basketball and had a collection of figurines and remote controlled cars."
The video game connection regarding the V-Tech massacre got rolling when Jack Thompson went on FOX News hours after the event and started making stuff up. Only to be outdone and followed with premature reporting by The Washington Post, which was later changed. According to both the state and federal reports, whatever is to blame for Cho's illness, it wasn't video games.