History. Your mastery of a game includes knowledge of its history, as well as of important events it was connected to or prominent historical figures involved with it.
Insight. Playing games with someone is a good way to gain understanding of their personality, granting you a better ability to discern their lies from their truths and read their mood.
Sleight of Hand. Sleight of Hand is a useful skill for cheating at a game, as it allows you to swap pieces, palm cards, or alter a die roll. Alternatively, engrossing a target in a game by manipulating the components with dexterous movements is a great distraction for a pickpocketing attempt.
Additional uses. You can use your gaming kit to do a variety of things, as your DM if you may use the tools for a specific task. Examples of such tasks are as follows; Catch a player cheating, gain insight into a players personality.