Looks like I was not clear enough for you guys. So I will start from the beginning.
My name is Jan and I work with game software provider Endorphina (like Netent, Microgaming, etc). We provide for both fiat online casinos and bitcoin casinos our slot games.
We reached a point where we have a big number of Bitcoin casinos clients so we decided to dedicate one game to the Bitcoin world - Satoshi´s Secret:
here you can play it (and a bunch of others) for free on our website
https://endorphina.com/en/site/gameListI will not post links directly to casinos where you can play for Bitcoin, since I am here to promote the game in general and everybody has their own casino brand they trust. If you dont have one and are you looking to start I can recommend you via PM only.
Hope this make things clearer for you guys.
Playing for free means you still win Bitcoins ? Have you linked all your clients into one thus having a huge jackpot or is it just another game ?