Sounds interesting! How does this work?
It is like a faucet, the amount is 100 satoshi and you can use it to place a bet there.
How to claim it? Simply click the wallet button (green) and you will see 4 options/menu.
They are Deposit, Withdraw, Exchange and Free BTC till this step you know which one to click and what to do next.
The hourly faucet of 100 sats that they are offering right now is quite generous if you think about it.
And you can easily use those free sats to bet. So you don't need to deposit if you want to try their site.
Just claim every hour and bet it on their site. But you need to reach 0.001BTC, in order to withdraw.
Which of course is hard if you will rely on their free satoshis only. You can always deposit if you feel they can be trusted.