How greedy the offer is! Free 0.06 BTC. How unrealistic the offer is!
This is free 600 USD
I can tell you that if someone offers you free 60 USD you can be very suspicious. I've been browsing the forums for years and haven't seen even 60 USD being given away to a large number of participants.
60 USD in a competition happens often or as an airdrop for Bitcoin owners but for registering an account? I think the most I've seen for testing out a site was $20 and there were other limitations like you had to bet it a few times to be able to withdraw or you had to get some referrals...
If they were giving away 6USD for free I'd say it could be legit. 60 - nah. 600? LOL
I believe only those that will believe this kind of offer are newbies or users that are desperate to get a hold of that cash at the moment. But unfortunately, there is nothing as free $600 or $60. $6 is believable but they will require you to accomplish some tasks but $60/$600, I don't think they will just give away for free without anything in return. In the end, they might get more money from you than what you will get from them. So stay safe!