Plants vs Zombies was released by PopCap Games in 2009, with music composed by Laura Shigihara. Her Grasswalk theme for the daytime lawn levels became the sound most players associate with the game, mixing playful instrumentation with a hint of Halloween spookiness. As the game spread across PC, mobile and consoles, the melody was shared in gameplay videos, remixes and meme edits. Its simple loop and instantly recognisable mood have kept it popular long after release, especially for nostalgic gaming content.