video games increases mind alertness

well i dont know about the studies behind it but i do know i use Guild Wars to relieve stress and tension..or even games online like from pogo..to just relax and unwind from the day ..i have read that it improves hand eye movement in kids ...and it must be something to the facts or else why do they keep developing the little tv computer games for kids who arent in school to learn them the a-b-c's and words and such? so for fun or for educational ..or even stress relievers i am glad they are around myself