The familiar Tetris theme most people recognize comes from versions of Tetris released after the original 1984 game, especially the hugely popular Game Boy edition from 1989. That melody is based on the Russian folk song "Korobeiniki." Over time, the tune became inseparable from Tetris and spread far beyond gaming through memes, compilations and nostalgic retro edits. It still gets used because a few seconds of the music instantly signal puzzle gameplay, speed, concentration and classic arcade-era tension.