Redeem Codes are earned by Pirates for various achievements - for example, finding a GM like Captain Cromwell or Shamus O'Malley, for winning a GM hosted race (like the Feats of Strength Competition) or even for successfully completing a game like Call of the Kraken. Codes are then exchanged in-game for a prize, such as gold or an item like a tattoo. To view all the current Redeem Codes, visit the page here.