Net or IPX network Unique User IDs and a worldwide ranking system for challenge ladders on Battle.net. Over 100 Blizzard signed and approved maps, newly built or redesigned and balanced for multi-player games. Flying Machines, Goblin Zeppelins, Goblin Sappers, Dwarven Demolition Teams now have a Patrol option. Canceling Foundries no longer uses all of the oil you spent to build it.
Allies can see friendly invisible units now.
Allies' towers and flying units will now reveal enemy subs. Partially-built towers can no longer see submarines. Death Coil will no longer damage allies. New sounds have been added for Skeletons, Runes, Eye of Killrogg, and for completed upgrades. You will still be able to play against your friends who have the original Warcraft II on their 486.