Research and Development is a puzzle-centric mod for Half-Life 2: Episode Two featuring an unarmed player but plenty of violent mayhem.

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it doesnt work and has more bugs then ive ever seen in a game

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Mac_2010 says

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KillerCubePlays says

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1malhahaha says

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LucasW says

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ahdzlwkda says

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saijin says

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MiauwMizx says

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sexbad says

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ig says

Community Rating

Average

9.6

1251 votes submitted.

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