Rena, like you, I have NEVER cashed out from an RTG casino (that could be in part due to the fact that i can never seem to find that pesky WITHDRAW button!!!) it's definitely not due to the fact that i don't ever hit something! Two games that I seem to get pretty lucky with (throughout the RTG software) would be : FRUIT FRENZY
(yes, the pics are a bit old=not high quality-but hey old can be good!) and HILLBILLIES
...once you hit the bonus round on these two games, I have found they keep popping up, and more often, than not, they will retrigger within the bonus round! Let me know if you have any luck- and if you can find that button to w/d tell me where it is! hahaha!