After finishing the Warcraft III single-player campaign I played 2 vanilla online games before discovering the tower defense "mods"/maps in the custom ladder. For 3-4 years the only game I played was various custom maps in Warcraft 3. It certainly added years of gameplay to the game. It even gave birth to an entire new genre with DOTA.

I'm very exited to see what this will bring us, although I don't know what I think about the idea of payed mods...