Helvera - Mistress of the Park

While visiting a park you are trapped inside by an invisible barrier. You are then engulfed by fog, which prevents you from breathing, and you pass out. You come round in a dungeon and there come face to face with Helvera. She sends you (if she likes you) on a mission to find the seven magical spheres and place them on the Golden Altar, in order to lift a curse of darkness from her and the house. [...]

There are 54 locations, connections are all logical and well marked, and I found I didn't need to map. The total score is 500 some of which is gained by solving the main problems and some by placing the seven spheres on the altar. I found the scoring a good indication of my progress in the game. (Jean Childs)