The extended self-conception was first discussed 20 years before( Hidano (2002), Hidano and Muto (2006)) and has attracted an attention from various fields of studies including applied physics. Unlike to western world individualism, we proposed a united self not only within our body and mind and also multiple individuals as an extended self. After showing the results of the game-theoretic theorem to identify the conditions to make an extended self, we argue how the extended self can be specially formulated in a collective art making a performance by taking several experiments. We discuss the possibility to utilize this conception to promote innovation in applied sciences.