Free play & extra credits After each hour game play, the game would add you 1 extra credit per hour. After 17 hours game play, you will earn the Free Play. Game play hour is cumulative. It counts when you actually play the game. It does not count when you just wait on the title and demo screens. You can check your game play hours on the Load/Save option. It saves your game play hour when: 1.) You gameover. 2.) You reset the game by software reset. 3.) You goto the Pause Menu and exit to the title.