The sound is associated with Plants vs. Zombies, the tower defense game released by PopCap Games in 2009. Its zombies use exaggerated vocal noises that complement the game’s colorful visuals and lighthearted approach to an undead attack. Clips based on those noises later circulated through gameplay videos, meme edits, animations, and short reaction posts. The audio remains recognizable because zombies are central to the series, and their rough but humorous voices can quickly evoke an advancing wave without requiring dialogue or additional context.