Basically your currency would be about 500 and it would be filled back to 500 once a week, if you have less than 500. And if you bet right you get more credits and when you have, for example 2000 credits, you get a emblem or some kinda of a trophy on your profile and so on.
This is just a idea that crossed my mind and decided to post it here.

And ofc it wouldnt use real money
