Twitch game is allowed?

http://www.twitch.tv/...itch_tino_

He is 14 and the question is whether he can play GTA because it is only from 16

GTA is from 18 not from 16.

His parents' permission must be there, but you can question that, yes.

His parents have to decide whether he can play it.

Oh man, what are you like…

Many children play games from the age of 18 nowadays at the age of 10 (at that time I was like that, it was even a shooter game)

As long as the parents agree, that's okay

The other question is who cares how old you are these days. All games can be bought by 5 year olds if they want to. I doubt whether Twitch will ban people just because they are not in the FSK of the game.

The USK / FSK means:

Entertainment media SELF-CONTROL
Voluntary SELF CONTROL by Filmwirtschaft GmbH

I.e. The person can decide for himself whether the game / film is suitable for them.
But since it's about a child, the parents decide about it.