Physical and social interactions are constrained, and natural interactions are lost in most of present digital family entertainment systems [5]. Magic Cubes strive for bringing the computer storytelling, doll's house, and board game back into reality so that the children can interact socially and physically as what we did in the old days. Magic Cubes are novel augmented reality systems that explore to use cubes to interact with three dimensional virtual fantasy world. Magic Cubes encourage discussion, idea exchange, collaboration, social and physical interactions among families. ACM Classification Keywords H.4 Information Systems Applications: Miscellaneous; H.5.1 Multimedia Information Systems: Artificial, augmented, and virtual realities; H.5.2 User Interfaces: Prototyping Author Keywords Interactive Entertainment, Augmented Reality (AR), Tangible User Interface (TUI)