game on adjective 1exclamation 1verb 1forms 3 adjective1 •Ready for the beginning or escalation of a project or competition.Like I said, China is game on if India wants to up the ante. — 2014 exclamation1 •Expressing eager anticipation of an event or undertaking, especially a competition of some sort.Former high school sweethearts Dawson and Amanda (James Marsden and Michelle Monaghan) say "game on!" after returning to their small town for the funeral of a friend. — 2014 verb1 •(slang) To take advantage of (someone) through manipulation and deceit.Be careful of him, he'll game on you in a heartbeat. formsgamed on · gaming on · games on