Thank you very much for your collaboration and please pass this link to your friends who also play.
You can check some previous articles out at http://naerjournal.ua.es/article/view/v3n1-5 : Graphics, playability and social interaction, the greatest motivations for playing Call of Duty. Educational reflections
and at: http://edwargame.blogspot.com.es/p/estudios-call-of-duty.html
And you can also contact me by twitter or email: @beatrizmarcano @edwargame
Thank you again for your collaboration