REFUGEVILLE

We could first gam ble with some small pebbles that cna be grabbed on the ground to sse if the shack has a 'system' to it's gambling and learn the games without risk.

Uh... not sure how to tell you but the system was fully explained?

You bet (Gambling Shack does not), and if you win you get pay out of x2, and if you lose you pay x2. If you cannot pay the Gambling Shack removes an organ from your body.
2d6, Odds House, Evens Player.
The odds favor us by default more than the House, and all bets that have been made so far are fully payable in addition to being non-vital things.

The only thing we don't know so far is the max amount of games we can play before it decides to leave, and what happens if the Gambling Shack cannot pay along with how it does.