Golf is one of my favorite solitaire games, which I play almost daily to wind down. Some are better than others; this one is THE best Golf solitaire by far.
I like that there are three strategy options for play. I would not refer to them as levels of play, bEcause within each strategy option, play is in number of rounds based on clearing a hand. However, I would not label one of the strategy options as "Casual," meaning the Ace can be a low or high value card. To me, this implied an easy level as I was getting familiarized with the play interface. It is as challenging as the other two options.
I really like how ads don't pop up in my face as I finish a round. Other games force me to view an ad for 10 seconds before I can move to a new turn. When that happens, I delete that game almost immediately, and I avoid those products or services because of it. I am more willing to view ads that are respectful of my time and overall gaming experience. And I do view some ads in this game for that very reason, because they are tasteful and worth looking at. Nice job to the designers of this game!!!