World of Warcraft is littered with hundreds of unique slang terms. But what does GG mean in WoW terms? GG is an abbreviation stands for the phrase “good game.” GG can be used in two different ways, even with its single definition. It can be used literally to tell team mates that the last PvP match was a good game. It can also be used sarcastically when somebody makes a dumb mistake. The GG WoW term is quite commonly used by a large number of players so be prepared to see it a lot.