You mentioned that one in another thread.
No game is ever safe, but for now this one has a good momentum so it is less riskier then others without a lot of investors
True but if you had to tell people whether or not they should invest in it I'd have to say don't risk your btc here. They have a lot of momentum sure but remember honest doubler? They had new investors after every minute, obviously very easy for them to continue to pay every person yet the admin was greedy and stole about 10 - 20 btcs. When you look at the amount of investments that have yet to be paid (over 200) I think we can confirm the admin will shut down the site very soon and steal all btcs.
Therefore you shouldn't invest with them. It's best to invest in a ponzi when it opens up and clearly is about to gain momentum. And remember if anyone is ever worried about losing out on the chance of doubling their btcs understand that after a few days the admin will start up a new site to try and earn more btcs. Just wait for the next one.
A Ponzi is bound to collapse whether it is intended honest or not. If you don't like the game don't play it. I was just pointing out there are enough investors to keep it rolling for a while now it is up to when the greed of the admin kicks in. Compared to other doublers that popped up this week, they lack a healthy flow of investors and will fail because of that.