Golden Eggs were introduced as hidden collectibles in Angry Birds, the mobile puzzle game released by Rovio in 2009. Finding one unlocked a secret bonus level, and the sparkling chime became the audio cue players associated with that discovery. As the franchise grew across sequels, updates and cartoons, the eggs remained a running secret for dedicated players to hunt. Clips of the sound later circulated in gaming edits and soundboards, where its short, unmistakable sparkle now works as shorthand for finding something rare or unlocking a hidden reward.