http://yumicoin.com/#bitcoin is a pay to win.
Each game is a raffle.
10 winners per raffle and you can choose if you want to play in BTC DOGE or LTC
The first and the last player who play win automatically 1% of the amount put by all winners.
The 8 others are choose randomly using random.org ( I put a video of the draw)
you can see the rules in the section "how does it work?"
For the moment no player, the site is just two day old.
And I am not intend to play in my own site so the balance is clear, no first winner for the moment.
For the total played, I just take 1% fee ( used for sending the gains)
The rest is for the winners.
You can play 0.001 or 0.005 BTC, 0.01 LTC and 1000 Doge.
That's not huge amount but I think small for starting
I don't want to make a lottery with number because I want people win big
I put all my love in that site, so now just enjoy