IIR, DOTA was a mod for Warcraft III, and Valve hired the mod team on to build the sequel based on Source.
from WP "According to Valve's founder and managing director, Gabe Newell, the company's investment in Dota was sparked from the collective interest of several veteran employees, including Team Fortress designer Robin Walker, programmer Adrian Finol and project manager Erik Johnson, all of whom had attempted to partake in team play at a competitive level."
So it might be a popular game, but it's not a major development for Valve in the sense that Team Fortress, Portal 2 or HF2 was...and also demonstrates some of the internal culture issues Valve has.
Popular = profitable. This equation governs the gaming industry.
In the case of Dota 2, the game is bringing in millions via the in-game store. The game has 200k active players at any given time, and they're well on the way to 1mil active players in a few years. A significant portion of those players are buying tournament tickets. Most of them are buying custom equipment like couriers, announcer packs, etc.
Dota 2 will be the most lucrative Valve project since Steam. To call it insignificant is to be short-sighted.
Heh. What do you think "classic" means when it's part of the title of a product? It means that it's a derivative of something else, and wants to capture some reflected glory. Don't go thinking that "Mary Shelley's Frankenstein", the 1994 movie, is the original.
Team Fortress was a mod for Quake before HL1 was a twinkle in Gaben's eye. TFC was someone saying "that sure was a fun gameplay mode, but I can't get anyone to load Q1 any more... maybe I'll recreate the same thing over again"
Team Fortress Classic is based on Team Fortress which was a Quake mod. In 1999, Valve hired the Team Fortress Quake modders to port their game to the GoldSrc (HL1) engine.
What do you consider a major development? Sure they hired the team behind the original but they still developed the game and put it out with company resources.
from WP "According to Valve's founder and managing director, Gabe Newell, the company's investment in Dota was sparked from the collective interest of several veteran employees, including Team Fortress designer Robin Walker, programmer Adrian Finol and project manager Erik Johnson, all of whom had attempted to partake in team play at a competitive level."
So it might be a popular game, but it's not a major development for Valve in the sense that Team Fortress, Portal 2 or HF2 was...and also demonstrates some of the internal culture issues Valve has.