On an adventure Card Shark the player becomes a sharper, finding himself in French society among aristocrats and people of the wealthy class. In the 18th century, most people competed with each other in a friendly manner, playing cards or engaging in other activities. The main character goes to parties and receives closed invitations, where he participates in card games and uses marked pieces. He is capable of switching decks, performing fake shuffles, and winning unfairly without anyone noticing.

The gameplay begins with the words of the Count of Saint-Germain, who says that you can earn a huge amount of money by playing with cheaters and scoundrels who have no principles. To do this, the user will need to become better than other cheaters and find their own tactics to win. Most opponents have great wealth and do not mind playing for large sums of money for the sake of emotion.

The gamer will visit different cities of France, small and large, where he will meet representatives of noble families and compete with them in several games. Matches are held in secluded mansions, luxurious salons and expensive palaces. The main goal is not to win the match, but not to get caught committing dishonest actions. The user has many ways to achieve victory by finding original tactics or combinations related to cheating.