The early KQ games were programmed with Sierra’s propriety AGI system. KQ4 was released in both AGI and Sierra’s next propriety system, SCI. For these games, KQ1-4, the graphics were drawn in the computer. Starting with KQ5 and beyond, the graphics were painted by Sierra’s artists and scanned into the computer, where they were then programmed into the game using various updated versions of SCI over the years.
