No, because instead of increasing true coordination, they create what is commonly called 'muscle memory', which enables the body to quickly react to a familiar scenario.
Using TV, video games and players,mobile phones, etc expose you to electromaganetic fields. In short, well you will be exposed to a lot of radiation i.e., infra red, mcrowaves, UV, etc. See...
if a game has lots of flashing lights people can have an epileptic seizure. but if they play a war game it can persuade them that real war is a game and they might join the army and die. or they...
That depends entirely on the person in question. Some people play for escapism, some people play for the opportunity to do things they would never be able to do in real life. It's almost impossible...