Game girl brought up in a mythical land (9)
I believe the answer is:
ruritania
'mythical land' is the definition.
(I've seen this before)
'game girl brought up in a' is the wordplay.
I cannot really understand how this works, but
'game' could be 'ru' (rugby union) and 'ru' is located in the answer.
'girl' could be 'tania' and 'tania' is present in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for ruritania that I've seen before include "Imaginary small kingdom" , "Hope country" , "adventurous setting" , "Imaginary European kingdom" , "Fantasy world" .)