im 14 and when i started playing i was surprised how many adults play this game (i think thats a good thing that they still like to hav fun) my parents wouldnt play with a waterslide even if it was right infornt of them anywayz i dont think its about age its about their personality the yonguest player i hav seen was 9 and he wasnt the fastest typer but was nice and mature the oldest i hav seen was i think 36 or 37 and he was nice to i reckon the average age would b 16-25 but im not sure