We have developed an interactive installation called ”Penguin Hockey”. It is a demonstration content of ”Tangible Playroom” for children. Tangible playroom looks an empty children′s room but it has large tangible image space with projector and big spatial force feedback display. Children can interact with not only computer-generated objects but also their friends and real physical objects. Penguin Hockey is a simple 3D hockey game playing with A.I. penguins. Players can interact with computer-generated objects and their friend. It is targeted to players as young children, elementary school age (6-12). This system provides not only application of Mixed Reality, but also a tangible life space installation naturally.