Additional content in the form of 50 new puzzles exclusive to the Nintendo DS version. Classic, unpredictable and off-The-Wall gameplay created by the infamous, award-winning game designer, Suda51. Multiple storylines to explore via the game's 18 mysterious scenarios that unfold differently depending on your actions. DS functionality that enhances the thought provoking nature of the puzzles players face through the use of the stylus. All the puzzles from the original Japanese version of the game for PlayStation 2.