I bet as high as my “money” will allow. I usually collect it for a few days before I play, which enables me to bet higher. I sometimes have in the billions in “bankroll” on there after big wins and getting lucky on high bets. It adds up slowly with the gold coins but I have not used mine ever. So it’s why I have almost a million saved. Just log in daily and collect the free money as often as you can until it builds up. All the games are about the same in my opinion. It’s easier to get a bonus because if anyone on the bank of slots you are playing triggers a bonus, you get it too. Good luck. I find the redemption too much of a hassle for the rewards though.