Game couple aloft? (3-2)

I believe the answer is:

two-up

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'game' is the definition.
Both the answer and definition are singular nouns.
Maybe there's a link between them I don't understand?

'couple aloft?' is the wordplay.
'couple' becomes 'two' (a couple can mean two of something).
'aloft?' becomes 'up' (up above).
'two'+'up'='TWO UP'

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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