So, you are claiming they are scams due to only being for the exact layout of bcgame? If so then what about nanogames.io? I assume they are maybe using the same software. I'm not sure though.
Man, often this fact is enough to tell that sites are linked. Scammers often do not change layout, since it needs additional money, effort and time. And they don't want to get bothered with all of this. So they just change domain name, mostly.
Yep, sometimes new casinos can use cheap software which also can be used by scammers. But this also tell a lot about such casinos, because this is not good if they don't want to invest even in their software.