Betcoin offered a bonus called Play-To 3x the deposited amount + 100% bonus.
Stay away from that one!
Let's say you deposit $1k. Then you have to reach 3x ($1k + $1k) = $6k.
You don't have to rollover $6k, instead your account has to hit the balance of $6k.
The funny thing is that they eliminate you within few days down to stakes of $10-20.
They give you 1 month to accomplish that which was not clear by them.
Given those stakes and that time frame it is human impossible to reach that balance.
After the 1 month expiration, they void all the bets and they withdraw the bonus.
Support is not willing at all to help you out with this theft.