Games part of the Police Quest series
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1987DOS adventureDeveloper: Sierra On-LinePublisher: Sierra On-Line
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1988DOSprotected adventureDeveloper: Sierra On-LinePublisher: Sierra On-Line
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1991DOSprotected adventureDeveloper: Sierra On-LinePublisher: Sierra On-Line
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1993DOSWindows 3.xprotected adventureDeveloper: Sierra On-LinePublisher: Sierra On-Line