| 摘要 |
<p>It is an object of the invention to provide an improved game machine capable of easily determining whether an unlawful action has been applied to a control device. The game machine 10 includes the control device 30 received in a case having an opening/closing portion 35. What is provided in the case 35 also includes an identifiable mark-recorded medium 50 having recorded therein a first mark 54 which is visible by human eyes and a second mark 55 recognizable only by using image reading means. The first mark and/or the second mark will be altered or become non-readable upon opening the case 35.</p> |
