Hi I just invested in this ICO. I suggest to invest for the following reasons:

1. If the ICO will not reach 5000 ETH, you will be refunded fully
2. There is another proof of efficiency that will refund you for 90%, if not enough games are played in a certain time
3. If the ICO closes with few more than 5000 tokens, you can have a decent share with only few token/ether, Imagine then  if the concept works and the ROI you can potentially have...

https://medium.com/e4row/a-profit-opportunity-an-ether-based-poker-game-accessible-to-non-ether-users-1e38f1f4b867