Slot Machine Mode (US Release)
At the player selection screen, hold Select and press A or Start to enable slot machine for Player 1 or B to enable slot machine for Player 2. The mode name then will change to "Slot".
Wish to review that great game you just played?
If so, when you complete that great game, don't start a new one. Simply wait for the ''Othello'' screen to go away. When the ''Demo'' game starts, it is not really a demo at all, but an instant review of all the moves played in the last game. This so called ''Demo'' will play over and over in a main screen/demo cycle until you either turn off the NES or start a new game. For longer term storage, I recommend capturing the demo on a VCR.
Expert Mode...