Rude Buster is Susie's signature attack in Deltarune, the episodic role playing game created by Toby Fox and first released in 2018. During the move in Chapter 1, repeatedly pressing Z as the attack travels increases its damage, which players quickly turned into a frantic spam technique. Clips of the boosted version spread through gaming communities and soundboards because the effect is instantly recognisable to fans. It remains popular for edits where a single hit needs to feel like a finishing move.