Closed loop cabinet cooling

A gaming machine comprising:

• a cabinet including an entry that provides access to an interior of the cabinet, a locking mechanism coupled to the entry and a plurality of security sensors wherein at least one of the plurality of security sensors is usable to detect access or attempted access to the interior of the cabinet;
• a regulated power supply, disposed within the interior of the cabinet, receiving power from an external power source;
• a power-off security device disposed within the interior of the cabinet, coupled to one or more of the plurality security sensors and monitoring access or attempted access to the cabinet interior even when the external power source is unpowered;
• a display, coupled to the cabinet, outputting content associated with play of one or more wager-based games;
• an input source receiving one or more selections from a player;
• a non-volatile memory, disposed within a first locked box within the interior of the cabinet, storing non-transitory gaming software used to generate the one or more wager-based games on the gaming machine wherein the gaming software defines a plurality of selectable prize structures and a plurality of sets of virtual reel strips wherein predetermined permutations of chance spins of the sets of the virtual reel strips are respectively associated with one of the plurality of selectable prize structures and wherein properties of each of the predetermined permutations of chance spins of the sets of the virtual reel strips are selected such that a probability of winning respective progressive prizes remains approximately constant for each of the sets;
• a power-hit tolerant memory, disposed within the first or another locked box within the interior of the cabinet and storing crucial data associated with a play of a plurality instances of the wager-based game;
• a gaming machine controller, including a processor and a memory, disposed within the first or another locked box within the interior of the cabinet, coupled to the regulated power supply, to the power-off security device, to the plurality of security sensors, to the display, to the non-volatile memory and to the power-hit tolerant memory, the gaming machine controller being configured to:
• 1) control the play of the plurality of instances of the wager-based game, 2) monitor the power-off security device and the plurality of security sensors to detect conditions warranting tilt state;
• 3) store at least some data associated with the play of the plurality of instances of the wager-based game to the power-hit tolerant memory;
• and 4) generate an outcome for a particular instance of the wager-based game;
• a multi-flow heat exchanger having a plurality of flow-through paths in heat exchange coupling with one another, at least a first of the flow-through paths being part of a sealed air-tight gas circulation containment volume within which a clean thermal transfer gas can circulate, the gas circulation containment volume including at least part of an interior of at least one of said locked boxes within the interior of the cabinet;
• and
• a plurality of gas blowers operatively coupled to two or more of the flow-through paths of the multi-flow heat exchanger, one of the blowers being disposed to circulate the clean thermal transfer gas through said at least interior part of at least one of said locked boxes and through at least the first flow-through path of the heat exchanger so as to thereby define a gas circulating loop in the air-tight sealed gas circulation containment volume, and another of the blowers being disposed to blow ambient air along another of the two or more of the flow-through paths.