The Act Completed music comes from Sonic the Hedgehog 4, an episodic platform game released as Episode I in 2010 and Episode II in 2012. The games continue the series tradition of using short celebratory cues after stages and successful objectives. Fans commonly reuse these victory sounds in gameplay clips, animation edits, achievement posts, and nostalgic Sonic compilations. The cue remains useful because its compact arrangement instantly communicates completion while retaining the fast, colorful tone associated with Sonic games.