I don’t know why this is even a thing now, but I hate when new casinos come out and you go to there “originals” and every single one of them are from different providers. Either just make a probably fair game section which includes all of the providers or pay a team to actually come up with a new and original games please, but saying you have originals, and they are right off the bat obviously are not, instantly turns me off from playing at new places.
You know it's original when you visit the game and then the design is unique. The thumbnails they used may look familiar to us because other casinos also use it, but I think it's only a minor issue. Another way to tell that the game is original is when you don't see the name of a game provider in the loading screen and by the time where you login. Never heard of a provably fair section yet but I think these games are from the originals.
And as we noticed, there is a way to very the result that we get but I never saw them on a provider game. Not all new casinos has original games on them but they still have other unique features to offer which may still attract us.