Just as in Triple Wins (or any standard online scratch card game, really), hit BUY TICKET to produce a new game card. Scratch off the covered windows one at a time or select SCRATCH CARD to erase everything instantly.
The big difference in Triple Wins High Roller, of course, is the potential to win a big progressive jackpot. Behind any figure on the card may be a stack of gold bricks. Getting three of these on a single card wins you the big accumulated prize!