Interestingly enough, games like LoL have communities with heavy influence historically from Blizzard's own Battle.net, as it descends from DotA on Warcraft 3,

Interestingly enough, games like LoL have communities with heavy influence historically from Blizzard's own Battle.net, as it descends from DotA on Warcraft 3, a UMS cloning other similar UMS maps on wc3/Starcraft.