As far as slot apps go ceasars is one of the better ones for free play. But keep in mind the "play money" slot apps take in more real money in a year than all of real vegas casinos. Its a massive industry and it doesnt make billions of dollars a year by just giving people all the chips they need for free to play as much as they want And seeing the developer response to another review encouraging addictive thinking and behavior in another user... The MOST disgusting thing ive seen on play store