Shuffleis a Japanese visual novel developed by Navel. It was originally released as an adult game for Microsoft 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 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 two spin-off sequels: Tick! Tack! and Really? Really!