To use this Massive Darkness 2 expansion, first make sure you have the core game as it's required to play. Then, add the new elements from the Gates of Hell Enemy Box expansion, like the 2 new mobs, their minions, leaders, and mob items, as well as the roaming monster, to your game setup. When playing, follow the rules of the core game and any additional rules specific to this expansion. As for maintenance, keep the game components in a dry and cool place to prevent damage. If there are any issues with your purchase or you need help with the game, don't hesitate to contact The Game Steward.