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But haven't they made only one game basically? >>
You choose to see the glass as half-empty, where I choose to see it half-full
. They produced Half-Life, which to me was revolutionary and still probably my favorite game of all time. They subsequently produced Team Fortress Classic and Death Match Classic (both of which were admittedly largely ports from Quake), and subsidized the makers of CS in their efforts. They have continued to evolve and improve the net code, and added any number of innovations to it, most recently the addition of voice communication. Everything since the release of Half-Life was done at their expense and released to the gaming community for free. By all appearances, TF2 is the most ambitious project in the history of online gaming, and all of the materials they have released from it look amazing. So, to answer your question, yes, they have only made one game, but they are still batting 1,000 in my mind, and continuing to innovate.