The phrase GG has been part of multiplayer game culture for years as shorthand for good game, so short GG audio clips spread easily in edits, streams and soundboards. This button version is mainly used online as a fast reaction cue rather than a long quote or scene reference. Its popularity comes from how flexible it is: people use it sincerely after a close match, or ironically when a play goes terribly wrong. That mix of sportsmanship and sarcasm keeps it relevant across gaming memes.