http://www.gog.com/gamecard/kings_quest_1_2_3

What's cool about it:
Includes the original KingΓÇÖs Quest: Quest for the Crown, KingΓÇÖs Quest II: Romancing the Throne and KingΓÇÖs Quest III: To Heir is Human
Three intriguing, magical stories that will keep you coming back again and again
Witness the very beginnings of the graphic adventure game genre
Overview:
In KingΓÇÖs Quest: Quest for the Crown, become Sir Graham, bravest of knights. Locate and return to King Edward the three great lost treasures of the Kingdom of Daventry in order to inherit the throne. Continue your adventures as (now) King Graham in KingΓÇÖs Quest II: Romancing the Throne as you travel to the land of Kolyma in search of your bride. In KingΓÇÖs Quest III: To Heir is Human, you find yourself a servant of an evil wizard. As Gwydion, you must master spells and overcome numerous perils to escape from slavery and save a kingdom. As with all KingΓÇÖs Quest titles, you must be prepared. The journey will surely prove long and treacherous. You may choose among many paths open to you. The more clever and resourceful you prove yourself, the greater your reward.