The Grand Martingale Unit (GMU) is usually just the first bet size but you can actually make
it whatever you want, or switch the size of the GMU whenever you want. So a more
aggressive betting system would increase the GMU as the progression increases. A more
conservative Grand Martingale would stagger the GMU so that it only comes every second
loss or becomes zero after a certain point. The traditional martingale is where the GMU is
zero all the way through.
The advantage to the Grand Martingale is that you are increasing your potential profit as you
are increasing your bet sizes. To players who find it frustrating to be increasing the risk to
their bankroll while only chasing a single unit profit will find the Grand Martingale more
suitable to their gambling style.
You should consider the Grand Martingale a general concept of progression betting. In
practice you can be quite flexible with the Grand Martingale. You can start with the Grand
Martingale in the early double ups but stop after the bets become larger, or vice versa. Also,
players can mix the Grand Martingale with other martingale systems, like the capped
martingale or the dynamic martingale.
While the Grand Martingale is traditionally a roulette strategy, it can be used on other casino
games like blackjack or baccarat.
Good Luck!
