Crossword Genius

A game and its objective (7)

Ross

I believe the answer is:

netball

I'm a little stuck... Click here to teach me about this clue!

Here is my best explanation:

'objective' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.

'a game and its' is the wordplay.
'a game' becomes 'ball' (ball game is a kind of game).
'and' says to put letters next to each other (I've seen this in other clues).
'its' becomes 'net' (I can't explain this - if you can you should believe this answer much more).
'ball' after 'net' is 'NETBALL'.

Can you help me to learn more?

This clue was last seen in The Globe and Mail