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RPGs based on popular books and movies were super common, and some were as as good as or better than missions in the WC3 standard RPG campaign. There were games similar to Civ/Risk played on a map of the world. There was a game called Darwin's Island and other similar ones in an "evolution" genre, which were basically prototypes of Spore. There were games that were sort of a mashup of RTSes and Betrayl/Secret Hitler, in that every player built villages but one was secretly a "werewolf" whose goal was to convert all the other players. Or until there were so many units on the map that the game crashed. There was also a whole genre of reverse tower defense games, where you would buy and upgrade tons of units that would automatically march into the middle to battle enemy units, until one pushed far enough to take out the enemy's bases. Skibi's Castle TD had a ton of unique Mario-Party-style minigames that you'd play against the other players between waves. Battle Ships combined MOBA mechanics with the auto-firing of a tower defense game. Some of the WC3 TDs, like Wintermaul Wars, were way more complex than the mobile games you see today, though - they involved strategies like building truly gigantic mazes to expose enemies to more tower fire and precisely angled walls that took advantage of quirks in the pathing AI to confuse enemies and keep them in the kill zone juuust long enough.
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Proto-MOBAs and tower defense games were basically singlehandedly popularized by WC3, of course.
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Pretty much any genre you can imagine was emulated with WC3 custom maps.
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