To provide a game machine permitting easy replacement of a case body in which an electronic part storing prescribed data on the play is mounted.

The game machine 1 includes: a ROM cartridge 361 having the built-in electronic part storing prescribed data on the play; a liquid crystal control board 360 in which the ROM cartridge 361 is mounted; a liquid crystal supporting base 320 to which the liquid crystal control board 360 is attached; and a rear cover 370 journaled turnably around turning shafts 346a and 346b disposed at ends of the liquid crystal supporting base 320 for covering a surface of the liquid crystal control board 360 on which the ROM cartridge 361 is mounted. The rear cover 370 has a case cover 371, formed by protruding, for storing the ROM cartridge 361. The case cover 371 is formed with an inclined part 380 inclined toward an opening end of the rear cover 370.