Good Old Games is running a $4.99 sale on multiple Sierra titles including Space Quest and Kings Quest. The games come in packages of three and are compatible with Windows (sorry, Mac users, but here's a consolation prize (http://osxdaily.com/2011/05/28/kings-quest-download-free-mac/)).
Each package includes three parts of each series, including Police Quest, Space Quest, and King's Quest. This includes such hits as the original King's Quest: Quest for the Crown rendered in beautiful 16-color CGA, a game that literally made my jaw drop when I saw it boot up on my friend's XT computer in about 1985. That, my friends, was true gaming, before the days of rail shooters and endless RPGs.
Product Page (http://www.gog.com/promo/activision_quests_2) via The Verge (http://www.theverge.com/2012/2/5/2773205/good-deal-activisions-classic-quest-games-50-percent-off)
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