As it is clear from the question title, What does "I'm game" mean and what's its correct usage?
As for correct usage, as with most idioms, use it as you will... there is no correct usage as such.
I'm afraid to go down the path of explaining correct usage of an idiom, so I will just tell you how I use it! I think of it as another way of saying, "That sounds good to me." Another phrase people often use is, "I'm down," and I would say that these two can be used interchangeably. Here is an example:
Q: Do you want to go see a movie tonight?
That last one is a mouthful, so you can see the appeal of the first two!
protected by Jasper Loy Apr 17 '12 at 19:32
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