I don't want to play on that site if the winners need to deposit before he can be able to withdraw his winning money. Nor I don't want to complete any surveys because I have a bad experience in the past with the surveys. But hey, why the OP delete the sites in the 1st page? I think he needs to change the rule that people needs to deposit $5 in bitcoin or other cryptocurrency and then he can start to play and withdraw the win money
I don't see it as a big problem
At least, as long as you don't have to deposit more that you want to withdraw, and flat 5 dollars seems to be a reasonable amount in this respect. Surveys are a poor man's source of income but in this case it was assumed that they could help reach the required deposit amount sooner, potentially without actually depositing anything. But it didn't work out as planned, so I had to actually make that deposit (I sent litecoins, in case you are curious). I don't know how provably fair this casino is, but it doesn't feel like a scam project to me. But everyone is on their own here, so don't take my word for it. Do your own due diligence in all cases