There is still a very real chance for "violent" video games in Olympics however. Keep in mind that many sports (e.g., archery, skeet shooting, bi-athlon, wrestling, boxing, etc . . .) are in-fact violent. It is a matter of application and acceptability though. The question becomes what constitutes too much violence for the mandated purposes of the Olympics (international cooperation and peaceful competition). I think what is likely to happen will be games with very high skill ceilings and excitement (e.g., RTS's like Starcraft or realistic racing games [although how this compares to actual racing I don't know]) and team games that are not overly-gorey (e.g., LoL or Dota) would be likely candidates whereas first person shooters are less likely to be approved by the committee due to their inherent "promotion" of violence (particularly those with high-gore/violence).