Quest for the Key of Nightshade is a 1-player roleplaying game for the TRS-80.
The player moves his party of warriors on a 30 x 30 grid which contains castles, cities, towns, tombs, bridges, mountains, and marshes. As the player explores, they enter combat with a variety of enemies. Battle results are determined by the party’s strength. During world exploration, the player loses fatigue, food, and water, and must frequently rest and repurchase supplies. The player can purchase arms, armor, and recruit more men at settlements. The goal is to locate the 5 Keys of Nightshade found throughout the land, clues to which can be found in towns. After amassing a large army and all 5 keys, the player can rescue the Good King from Castle Nightshade.