Half-Life 2 Episode 3 is certainly, with Black Mesa mod, one of the most speculating game on the web. Valve, who developed Alien Swarm seems to have put Episode 3 clues in the game's SDK!!

StickZer0 opened a new topic on Steam Half-Life 2 Episode 2 forum: Half Life 2: Episode 3 found in the Alien Swarm SDK!
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  • 0
    Chiggins Jul 22, 10
    Ahh I want Episode 3 to come out already!!!
  • 1
    Ech0ez Jul 23, 10
    Gotta love Valve's cryptic hinting at games that probably aren't going to come out in our life time ._.

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