( informal ) used after sth has happened that makes it clear that a contest is not yet decided and anyone could still win :
We were losing 2–0 with ten minutes to go, and then we scored. It was game on!
( informal ) used after sth has happened that makes it clear that a contest is not yet decided and anyone could still win :
We were losing 2–0 with ten minutes to go, and then we scored. It was game on!
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005