Knight's Quest is a classic adventure game released in 1986. The objective of the game is to help the knight, Sir Graham, find the three lost treasures of Daventry and restore peace to the kingdom. One of the treasures is the GRAIL, which is a five-letter word. The GRAIL is a sacred object that is said to have magical powers and is sought after by many. It is believed to be the cup used by Jesus at the Last Supper.