I' ve heard that a large group of satanists says that playing videogames is the most satanic thing you can do because it' s all about self-fulfilment.
It seems that the most important thing for satanists is self-fulfilment. that seem to fit when describing a videogame player. You keep playing because you feel satisfied and entertained. You are satisfied because you feel that you have solved a problem or a mission. That is the feeling that satanists are trying to get. But of course there are different kinds of satanic believes. If you are interested in more info about satanism, please visit:
http://www.churchofsatan.com/
Since you are playing videogames, maybe you should join them
MUAHAHAHA! Through my body the soul of Satan thanks you all for giving him more power by playing your videogames! Let the search of self-fulfilment spread across the world until heaven falls by his hand!