I agree, it's all mathematics (probability, likelihood of losing as little as possible while making 1 mbtc wager 100 mbtc haha) and the lower the house edge, the better. So Blackjack is the only thing to play long term.

However, to avoid variance, play smallest amounts, but you'll get such a slow wagering effect (this is the reason I asked for auto).

In this case roulette can help you a lot (but high house edge).