It's now spawned one popular game, one of the most popular games in the word currently, and it still has DotA 2 and a few more clones being built at the moment.

Apparently LoL gets 1.4 million daily players, so is this all inherited players from DotA or have they just attracted a huge amount of new players to the mini-genre?

Oh also, the peak concurrency of people playing LoL is larger than the top 10 Steam games combined...