Angry Birds Space was released in 2012 by Rovio as a space-themed follow-up to the original Angry Birds mobile puzzle game, sending the familiar birds into zero-gravity levels filled with planets and asteroids. Its bonus and warp-style levels became a favourite part of the game for players hunting hidden content, and short clips of its cheerful sound effects later circulated on soundboards and in gaming edits. The bonus warp sound endures because it is short, instantly recognisable to fans of the series, and works as a clean audio cue for a reward, a secret or a level change.