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.
They could have some specific rules for their platform. But this does not mean they are scams. You should provide proof of the problem you are facing and that you feel it's suspicious.
It looks like the OP doesn't mean that having the same design or layout from another gambling platform is how they scam but rather with the twisted rules from the site. I guess the gambling platform is somehow brand new based from how they scam users. Having to deposit before withdrawal as well as not being able to cater or provide limit to users who made huge deposits.
Still OP needs to provide more information and evidence to support this scam accusation especially with those block accounts due to high deposits.
Anyways, I wouldn't trust any gambling platforms that has the same format or design from another gambling platform.