Likely to have an undesirable outcome, which one cannot change or escape from.
intj
Good going; may be used genuinely or sarcastically.
Good game; commonly used at the end of a gaming match; also sometimes used to end an argument.
name
Gamergate
but it has been more recently applied in general online discussions
How often have the words GG and but it has been more recently applied in general online discussions occurred in a corpus of books? (source: Google Ngram Viewer )