Get 10 coins and go to the Tic Tac Trump game at the casino. Bet 6 coins. Do not double then lose. The game will still allow you to bet 6 coins even though you only have 4 coins. Bet 6 coins and lose. The game will list the amount of coins you have as -2. Quit Tic Tac Trump then choose to play it again. Bet any amount and win. You will now have 9,999,999 coins.