Here is a screenshot of the app:

http://i.imgur.com/xc49d9h.png

And here how you would pick the teams and play:

http://i.imgur.com/Ylvc5oj.png

Winner takes all. That's the good thing so the jackpot is big. I've been running simulations with a thousand and ten thousand players, of course the more players the more winners since there are approximately 15 games a day and two possible outcomes per game win/lose so the odds are 2^15 even though favorite teams are more likely to win so the odds get reduced to one in a thousand.

If you want to be a tester let me know to put the link to the app available for download.

* Still fixing some bugs