This part of the list is a very small selection of sources I used in my research project, I have included them mostly to show that I use journals often.
Weibel, D., Wissmath, B., Habegger, S., Steiner, Y. & Groner, R. (2008) Playing online games against computer- vs. human-controlled opponents: Effects on presence, flow and enjoyment. Computers in human behaviour, 24
Ferguson, C. J. (2007) The good, the bad and the ugly: A meta-analytic review of positive and negative effects of violent videogames. Psychiatry quarterly, 78.
Jennet, C., Cox, A. L., Cairns, p., Dhoparee, S., Epps, A., Tijs, T. & Walton, A. (2008) Measuring and defining the experience of immersion in games. International journal of human-computer studies, 66.
Bushman, B. J. (2011) The effects of violent videogames. Do they affect behaviour? Retrieved April 9th from http://ithp.org/articles/violentvideogames.html
Boyle, E. A., Connolly, T. M., Hainey, T. & Boyle J. M. (2012) Engagement in digital entertainment games: A systematic review. Computers in human behaviour, 28.
Now onto the rest of the list, just a couple of studies, that link aggression and videogames, from peer reviewed journals.
Ran, W. (2007) Effects of violent videogames on Chinese adolescents? pro-violence attitudes, attitudes towards others, and aggressive behaviour. Cyberpsychology & behaviour, 10(3)
This study found that playing violent videogames increased aggression, although they did note that this became non-significant for actual behaviour, so it links with aggression and attitudes, not actions. This study, as you can check, was in Cyberpsychology and behaviour, a peer reviewed journal, respected.
Christopher P. Barlett (a, ⁎., Richard J. Harris, (., & Callie Bruey, (. (2008). The effect of the amount of blood in a violent video game on aggression, hostility, and arousal. Journal Of Experimental Social Psychology, 44
Again, a respected journal. The study found that when high levels of blood are present in a videogame, compared to low levels or no blood, had a higher hostility and physiological arousal. They also found that in the high blood category were more likely to use in game weapons as opposed to melee combat. Note since they actively manipulate levels of the independent variable this is not a correlational study.
Engelhardt, C. R., Bartholow, B. D., & Saults, J. (2011). Violent and nonviolent video games differentially affect physical aggression for individuals high vs. low in dispositional anger. Aggressive Behavior, 37(6)
This is an interesting study. It measured participants with low and high dispositional anger, and then randomly assigned them to play a violent or non-violent videogame. They found that those with a high dispotion to anger became more aggressive than the others, but only if playing a violent videogame. This suggests that if videogames are most likely to make you aggressive if you already have a tendency to become aggressive anyway, possibly making video games a trigger as opposed to a true cause. Again, this is an experiment, and as such is not correlational.