Feeling sad, looking for a place where I can gamble the last of my stack.
What sites can I gamble 50% BTC and double or nothing?
You may do this on
https://freebitco.in/They have “multiply btc” page, where you specify the stake, odds and just an expected result hi/low. There is always some margin, as it is not a pure 50/50, but changing odds you may decide about your chances.