Martingale doesn't always fail though and I am living proof of that. It's a useless strategy in the long-term and will suck up your bankroll quickly, but it's actually pretty effective in the short-term if you play smartly.
I have seen bets placed on martingale strategy to be on a winning streak and if stopped right there the net profit might be good. But there is this habit of gamblers to not stop when having wins and so the reds will suddenly take over as the bet size keeps getting bigger and you are out of balance.
For example, Rollbit duel arena is a good place to execute this strategy in the short-term thanks to zero house edge.
Its a PvP game and we are mostly talking about the dice game on freebitco.in - I have seen blackjack players use doubling the base bet method on a loss for many of their games. So its not limited to dice games, but should be used with caution, because it is not guarantee of wins but only a method to use the remaining balance to try to maximize the lost money.