This is one of the few adventure games with a decent amount of in-built graphics. Having a picture or map of your location does make a great deal of difference to an adventure game.
The screen itself is split into graphics and test, though often there is only text. The object of the game is to find the lost treasures whilst rescuing a Princess held by a witch (another chance to be a hero), and battling against various evils including scorpions, elves, etc. The Knight's Quest follows the tradition of Phipps games by being extensive in detail and length and a pleasure to play.
As far as adventures go, I feel confident to recommend Knight's Quest most highly.