Guys, all your answers in one post:

1. We already have SSL, check it
2. Its impossible to convert the game winnings in BTC. You can or play for free or play with another players on BTC. Like in Poker for exampe
3. How to play you can read here - http://cryptopoly.io/rules, but better play once, its easy.
You have two ways to play:
- create New Game by clicking to Robot's eyes
- connect to somebody already created game

Get fun!