To use this Massive Darkness 2: War of Souls Enemy Box expansion, first make sure you have the Massive Darkness 2 core game. Once you've got it, simply add the new mobs, minions, leaders, mob items, and the roaming monster from the expansion to your core game setup. When playing, follow the rules that come with the expansion for how these new elements interact with the existing game. As for maintenance, keep the game components in a dry and cool place to prevent damage. Avoid exposing the cards and figures to direct sunlight or moisture. If you have any problems or questions during use, don't hesitate to contact The Game Steward.