Well, Gunman Chronicles is a game built using the Half-Life engine, by a team of developers spread around the world. It casts you in the role of the heroic gunman, fighting off the same aliens that plagued the Earth in HL, this time in a different part of the galaxy. In a novel move the weaponry will be programmable, meaning you can switch it to fire in a number of different ways.
Gunman promises to be a very classy shooter.
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