Map making for those is pretty rare nowadays. It makes sense to focus on Warcraft 3 for now.
StarCraft: Brood War has more (and better, no offense, but I don't think 300 versions of DotA count as 300 maps) custom maps than Warcraft 3.
StarCraft: Brood War has more (and better, no offense, but I don't think 300 versions of DotA count as 300 maps) custom maps than Warcraft 3.