Portal 2. The aperture science handheld portal device returns and works as normal but there are many additions to the original s set of tools and traps. Portal 2 update.
Home about blog awards media downloads. Using a highly experimental portal device you ll once again face off against a lethally inventive power mad a i. The digital pc version is distributed online by valve s steam service while all retail editions were distributed by electronic arts.
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Portal 2 update. The aperture science handheld portal device returns and works as normal but there are many additions to the original s set of tools and traps. Portal 2 is a puzzle platform game developed by valve. Using a highly experimental portal device you ll once again face off against a lethally inventive power mad a i.