A. When you want to make gambling transactions at Bitcoin casinos, you’ll see two different options when choosing the currency. µɃ is micro-bitcoin, and it’s valued 0.000001 of Bitcoin. If you make a deposit of 1000 micro-bitcoins, you’re playing with the value of 10 USD. mɃ is milli-bitcoin, also known as millie or millibit. To play with an amount equal to 10 USD, you need to deposit only one milli-bitcoin. It’s 0.001 of a whole Bitcoin. These things may seem overwhelming when reading about them for the first time. But there’s nothing to worry about. Bitcoin’s website is full of information to get you started with cryptocurrency.