What precautions should I take to not make him a games addict as he grows. Because I know what I have lost playing games for so many years when I was young.

My 4+ years old son (will be 5 in two months) loves to play games. Myself as games addict (now casual) keep playing games in mobile, pc and xbox (mostly on pc). My son inherited this from me and seems like he is little addicted to it because he wants to play games almost all time.

Mostly he plays car games both in my mobile and pc (he loves cars, we buy a new car/toy almost every month) and since he can't play other games, he asks me to play other games like angry birds, batman, plants vs zombies etc.

Good thing is he is controllable so far, most of the times when we say "no, this is not the time to play" he listens to us and says "we will play again in the evening or next day morning". He goes mad if we won't allow to play him some times when we did not allow to play because when I am buzy with work  with my computer or my mobile. Over all, he is still controllable.