Remark and conclusive statement said usually at the end of an video game round. A show of sportsmanship usually from the winning team.-Slang-Can be used in a derogatory way to mock someone outside of a video game, including yourself. Usually done after someone makes a fool of themselves during an argument or verbal confrontation of some sort or when a person using this remark, clearly wins pretty much anything; game, debate, discussion, valid point, etc.In contrary it can also be used to show inferiority or just loss at something. In this case its complete loss of hope for something, or just giving up entirely on something stating, it was a good run but its over, GG (good game). A common synonym of this would be, Fml, Fuck my life.