I would stay away from this casino, or examined them more.
It uses same template that was used previously used by some scam gambling websites.
I don't know if LionSlots777 is a scam, but using the same template is red flag for me, so think about it before sending them any coins.
Same template is used by Cryptolottery.BET so stay away from that also.
They just using a script and running a site. The name seems to be cool, but the Bitcointalk representative isnt active here and truly dont care about the queries raised here. Like me many people will skip the site, when they see that no proper announcement or branding is there at the site? It seems like they just created this announcement thread just for the sake of creation. Nevertheless while registering, they are asking about tons of information, which is not usual to be honest. Lets see whats the OP is saying about this.