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2. free game
No cost social exchange or entertainment. An opportunity to mix things up.
I'd rather go back to high school than get my GED, because it's free game.
1. free game
(also "open game") : open for anyone to take or use; unclaimed, up for grabs.

Originally used in the sense of "game" as animals to be hunted.
Roadside blackberries are free game for anyone to eat.
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