Swampy first appeared in Where's My Water, the Disney physics puzzle game released for mobile in 2011, where the alligator tries to get clean water to his shower. The game's bright cartoon presentation uses short effects to mark actions and transitions, and clips named like Curtain03 reflect that file-based naming from game sound libraries. As those effects were shared on soundboards, this curtain swish became a standalone bite for editors. It remains used because a sub-second theatrical swish communicates a reveal without needing dialogue, music or explanation.