By the way, did your site needs KYC for every member? Because if yes, then I don't think that you will get so many gamblers will comes to your site and play the game.
They did not mention anything about KYC which is why it looks like there is no KYC involved here. That is pretty clear to anyone visiting the website.
How much minimal deposit and withdraw?
If you took the time to scan their site, you could have found the answer on your own. Here you go :
TERMS
Minimum Deposit : 0.0001 BTC
Minimum Withdraw : 0.001 BTC
Daily Faucet: 40 bits
KYC is not involved here as well in many gambling sites. If there were KYC implemented, i think very few people would have joined and played on this site as gamblers don't like KYC.
The Minimum withdraw limit is also low, which will also attract many gamblers.