10 mBTC is not much, if I were you I would deposit to rollin and let the bot martingale it. In the last couple of days I have got 4 mBTC from my initial investment of 3 mBTC (which I got carefully martingaling 1 BTC I had). Do not get gready, start with 1 or 2 satoshis bet and play in a way that the increments are not huge (I use a modified martingale that increases my bet 1.5 times every time I lose. Since I start with a low first bet I have had no bad luck of busting my bankroll yet).
If you want to have fun instead of just letting your luck get you a profit, play Royalty Derby on Directbet Casino. If you decide to go for Sports betting as other people have suggested, I would advise you to go with Betcoin.ag, the odds are nice there!
Good luck!
Yet is the biggest keyword there. It takes 46 losses to get up to the point where you gamble >1 BTC, and 44 losses in a row to lose 1.11 BTC in total.
Now at what point do you stop? What do you consider "too much" to gamble with? Because think about it. On the 30th bet, you're betting 0.00127834 just so you can profit 1 satoshi. You're betting huge amounts to profit a tiny amount, WITH the house edge against you.
Sure martingaling with 1.5x is a slower way of losing money, but you're still at a loss.
It may be a 1 in 8796093022208 chance [50% chance] to lose 0.746 BTC, but that's still a chance of getting that losing streak.
Besides, the longer you play, the more you lose.
Oh, and if we're talking about your 3 mBTC investment, it only takes 29 rolls to lose [almost] that. On the 29th loss, you lose 0.00255666 in total, a 1 in 536870912 chance [at 50%]. Okay. These numbers seem massive! Massive! But they'll [the streaks] happen if you continue. And you're investing x amount of money to get a return of... 0.00000001
BTC?