Plants vs Zombies is a tower defence game first released by PopCap Games in 2009, in which players defend their lawn from waves of zombies using an arsenal of plants. Clearing a level triggers a short celebratory jingle, and louder rips of that moment have circulated on soundboards and in gaming videos ever since. Creators keep returning to it because the tune is instantly recognisable to anyone who played the original game, and its upbeat, slightly exaggerated tone turns an ordinary win into a memorable punchline.