Brontes IV was a small planet missing from most Confederation navigation charts. At least until all hell broke loose. Now The Swarm advances through a living nightmare of smoke and laser-fire. Protoss rain down from orbit, obliterating Zerg and Terran alike. Amid the ruins of burnt-out cities, a Terran rebellion seethes under the inspiration of a madman. Abandoned by the …

Although not authorized or supported by Blizzard, this add-on features 25 campaigns and thousands of levels for one to eight players. What is most interesting is the Level Manager: it helps organize the different levels, keeps track of which ones were played, etc. Requires full version of WarCraft II to play.