The biggest win available on Pirates Charm slot can vary depending on the specific online casino and its settings, as well as the player's wager and luck. However, it's not uncommon for players to potentially win several thousand times their initial bet during the bonus rounds or with the help of special features. The exact maximum win amount can differ from one version of the game to another, so it's a good idea to check the paytable and the rules of the specific Pirates Charm slot you are playing for the most accurate information on potential wins.