Well some games give immediate great play, others take longer, for many players, that's why I agree with the thought the investment has to be made back for some. It may be a silly notion to some players, yet other players perfectly agree. Just depends on ones experience.
I have seen that Pharoah slot at the B&M for instance, when it was new, they had a whole row of them and you couldn't get a machine for love nor money, it was always packed and was playing quite generously, then one day I went in and only one or two machines of the row were being played. Something changed, that would be my guess and the regular players out there always avoid machines that are no longer "loose" as they were in the beginning. As interest wains, the machines start getting moved around until they are finally moved out for lack of interest and something new is brought in to replace them. Of course this is only how it appears, may not be the case, but visitors to casinos perceive things this way, it's only natural.
Whether they have actually been tightened or loosened, who knows, but hot and cold machines are noticeable to anyone who observes these occurances.
Online is a bit different since you can't actually see anything except the slot you choose and play. What can be hot for some will equally be cold for others, cold for to long and the machine will not get the constant return as it should.
My experience with White Rhino, I have now played it for real on 3 sessions and still had not seen a single decent return nor a feature.
Yesterday after playing for real and busting out at 50-25 cent wagers, I switched to fun mode. On the third spin I hit the 3 scatter features of the guy in the jeep, then about another 30-40 spins after this feature I hit the Rhinos and won 4 retriggers during this session, with around 75 or 80 freespins total. Was I due to get this play in real mode if I had deposited more, or would it not come except in fun mode, that is a question that always lurks in the mind. The fact that I was out of money and then played in fun mode and got these features, doesn't solidify my confidence in the game.
So for some the game will be their new favorite and for others it will be nothing more than a stay away from game, lest your infuriating frustration causes you to lose even more by not only losing again but also trashing your computer in a fit of unbridled rage at yet another game that has made one feel like a total idiot for even spending money on the "new game".
Anyways, it can be a great slot, as witnessed in my fun mode, so just have fun with it and enjoy!