If the casino does not directly show the rtp of the slot game, how can we know the RTP version of it?
There is no way for us to know. The casino may state one set of figures, but in reality it will be different. I think that only the casino employees have the exact information, and of course they will not disclose it to strangers (clients) under any circumstances.
As you may know, some specific slots have multiple RTP versions ranging from as high as 97% to as low as 88%.
The range of numbers looks very large. At 88%, I suppose it becomes simply unthinkable to win.
This makes me wonder, what if, even in a reputable casino, RTP version can be tweak like this, so for example, a casino can claim they are using the 96% RTP slot version of a slot, but it could actually turn out to be the lower version. Can this be a posibility?
I don't know for sure if this is possible, but in any case, we can't check it in any way.
If the casino was "fair", then they could leave their customers the opportunity to verify the truthfulness of the numbers they announced (RTP). But as it is, all these words and pictures from their side look unfounded.
If the casino has the opportunity to cheat, which will bring profit and not be caught for it, then why shouldn't the casino cheat?