Hi all,
I've found very good game named Satoshi-Karoshi. My deposit was 0.4 BTC and made 2 BTC in a few minutes.

Here is screenshot of my gameplay with 0.4 bet and I took 1.928 BTC
http://img9.imageshack.us/img9/1786/furut.jpg

Link: https://www.satoshi-karoshi.com/?r=3001214 (affiliate link)

Good luck !