The present invention relates to a cell comprising an Endoplasmic Reticulum stress element operably linked to a reporter element and an exogenous gene encoding a protein that induces ER stress. The system first samples values for performance metrics using external sensors that are coupled to a system and internal sensors that are built into the system. In a case in which a game device is specified as the echo server, a game information set generated at game device and a game information set received from an opponent game device are sent to opponent game devices in an order in which game information sets are received.