This purpose of this product is to present a detailed map and enough description for a game master to quickly flesh out an adventure. Because game systems and power levels vary so greatly, the specifics of what creatures dwell within are kept generic. Suggestions are made and a logical environment is constructed, but the final choices are left to the game master. Consider your group and your game and then just plug in the creatures that will serve you best. To facilitate use with miniatures, the map has a 1 inch grid built into the artwork. Beyond this, Zero Hour products are system independent.