The Staff Of Karnath is a video game for the Commodore 64 developed and released by Ultimate Play The Game in 1984. It was the first of a series to feature the aristocrat adventurer Sir Arthur Pendragon.
The game is set in a castle presented in a scrolling, oblique view. The aim of the game is to collect all pieces of a pentacle before midnight, in order to form the Staff Of Karnath. The pieces of the pentacle are guarded by various magical creatures, some of which can be defeated by casting spells, others requiring accurate timing and movement. Once a piece is obtained no more pieces can be collected until the pentacle is taken to a specific chamber within the castle.
Source: Wikipedia, "The Staff of Karnath," available under the CC-BY-SA License.