A gaming machine of the present invention includes: a plurality of gaming terminals each of which has a first light emitting portion, and which runs a base game and a special game configured to award a special payout; and a shared display. Application-level security refers to detecting security threats from functional user behavior. The invention also concerns a device and a drill rig. The precipitating agent is a lithic material that serves as a preferred locus of deposition for the metals precipitated by the neutralizing agent, i.