Should twelve and thirteen year olds be able to play any video game they want?

To my opinion, there're two ways to answer this question. The first answer that I might say is childrenat age 12 or 13 have rights to play any games they want to play. When children playing games, they could express themselves, throw out stress, and relax. Besides that, when children playing games, maybe they could gain more knowledge about life or history. Children understand themselves that what games do they want to play, and what games could make them feel better. But this condition just only could apply to children that know what are they doing, and they have to know how to control themselves. Not only that, they still needed to balance their time schedule between playing and studying.
The second option would be no. The reason that i say children at age 12 or 13 shouldn't play any games they want because it might have a really bad effective to their life. Right now, there're lot of company that created many violent games like killing with dangerous weapons. There're some kids understand that what they saw on games were only fake. But some of them are not. That's why there were many accidents from kids at age 12 or 13 that are killing each other just because of jealousy or any small things. It happened a lot because the children thought like when you killed somebody, they will become normal again by putting blood and energy. But there're some kids killing people on purpose, because they was effect by all violent scence in the games. Not only that, many children didn;t communicate to other people around them just because of playing games too much. Some of them also get mental problems.
So finally, what i just want to say is that children could have their own decision on what they want to play. But besides that, their parents also need to know what games their kids playing, to know is it approriate or not. Both children and their parents should talk about games, to balance everything in life...