The melody most people call the Tetris theme is best known from Nintendo's Game Boy version of Tetris, released in 1989. That in-game music helped turn the tune into one of the most recognizable pieces in video game culture. Online, the clip spread through gaming videos, meme edits and short comedy posts because it instantly signals stacking, pressure and retro puzzle nostalgia. It still gets used whenever creators want viewers to think of blocks, speed and a problem getting harder by the second.