魔法门之英雄无敌4：阴云密布

The Gathering Storm is the first of two expansion packs for the turn-based strategy game Heroes of Might and Magic IV. It was developed by New World Computing for Microsoft Windows and released by the 3DO Company in 2002. The Gathering Storm offers six campaigns, more than 20 maps, 16 additional artifacts, four new creatures, and a multiplayer update. Each of the first five campaigns features a new specialty hero. The Gathering Storm also features an upgraded editor, which allows full access to new heroes, adventure objects, artifacts and creatures. A new music soundtrack is also included.

The game tells the story of five heroes who unite forces against a crazed wizard called Hexis, whose powers disrupt the laws of Nature and threaten their homeland, Devonshire.