Shuffle! is a Japanese visual novel developed by Navel. It was originally released as an adult game for Windows on January 30, 2004. It was subsequently followed by an all-ages release for the PlayStation 2 (PS2) and an expanded adult release for Windows. The Windows version was localized in English by MangaGamer in 2009, and the PS2 version was localized in English by YumeHaven in 2016 on Steam. The gameplay in Shuffle! follows a branching plot line which offers pre-determined scenarios and courses of interaction and focuses on the appeal of the female main characters. Shuffle! has been re-made into an expanded version called Shuffle! Essence+. It has expanded routes for the original five main heroines as well as new routes for six other characters. Shuffle! also has three spin-off sequels: Tick! Tack!, Really? Really! and Shuffle! Love Rainbow.