As in I'm likely to do that, might be fun; often references challenges to keep up in drinking games.
"Hey, let's do Irish Car Bombs!" "Sure, I'm game."
an affirmative phrase denoting a willingness to participate. Similar to sign me up and I'm down
Tim: Who wants to be a lawyer?
Steve: I'm game!
Phrase used to show agreement for a suggestion.
"wanna go to the club so we can pick up some bitches?
"I'm game."
Being up for an idea or something of the sorts.
"hey who wants to go get some icecream" -person 1
"i'm game" -person 2
A phrase used to agree in what is going on or to happen.
"You want to go to the, movies i'm game"
Willing to participate in
Bill:"Hey Pete, wanna bang some chicks"?
Pete:"I'm game bill"!
I am game!
Means emphatically a 'yes'.
When you are up for something (to do). When you want to be included into the said activity.
Harry says, "Are you up for a game of golf tomorrow, John?"
John replies, "I'm game!"