While there occurs a steady operation state where an engine operation state is maintained substantially constant, a high-response intake air quantity sensor is temporarily powered off and is powered on again when a predetermined time elapses after the power-off. A second game controller receives the primary game messages and uses the information contained therein to administer a secondary game having an associated prize. Information from the tube bending indicators permits determination of the orientation of a feature, such as an orifice, at the distal end of the medical device relative to the anatomical reference.