S1mple is the in-game name of Oleksandr Kostyliev, a Ukrainian professional Counter-Strike player known for elite individual play and a prominent esports career. The “GG and bye bye” phrase became recognizable through gaming clips and community sharing rather than as a conventional scripted catchphrase. Short edits, stream highlights, and soundboards helped separate the line from its original context. It remains useful because “GG” is universally understood by gamers as “good game,” while the added farewell gives the clip a sharper, more memorable finish.