^^ adding on to what was said
The forum itself is PG13 (as stated in the forum rules), but there is no official age restriction on the game. The only thing to be wary of is the chats and such in the game. Although the game is welcome for all ages, sometimes there's older content. We just make sure younger users(and their parents) are aware of this fact. The game and forums are monitored for innapropriate content but sometimes it can get missed. But to answer, Feral Heart is a very user friendly environment and there's no age solid age limit.