Portal 2 sells 4 million units combined on PC and console
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Valve has announced Portal 2 has sold over 4 million copies combined on PC and console since it was released a year ago. The figure was provided to Neogamr by level designer David Sawyer. The entire franchise has now sold over 8 million total, with the original Portal game selling over 4 million units - a figured which doesn't take into account Steam sales. Thanks, Gamasutra.