Play King’s Quest Iii: To Heir Is Human Online

King's Quest III: To Heir Is Human is a graphic adventure game released in 1986 for MS-DOS. Developed and published by Sierra On-Line, Inc., it is a fantasy title featuring puzzle elements and presented from a side view perspective. The narrative follows two parallel stories set in the kingdom of Daventry and the land of Llewdor.

Players primarily control Gwydion, a young slave to the wizard Manannan in Llewdor. The core objective is to escape the wizard's clutches by outsmarting him, which involves performing tasks while avoiding detection. Gameplay proceeds through typing text commands to interact with the environment, such as combining verbs and nouns to pick up items or use objects. Exploration occurs across interconnected screens that form a looping landscape, and Gwydion eventually gains access to a magic map for teleportation to different areas. A significant portion of the game operates in real time, with Manannan following a set schedule, requiring the player to carefully plan and time their actions to avoid being caught.

Progression involves collecting numerous items and executing complex sequences to solve puzzles. The game imposes a time limit for its first major quest, adding a layer of urgency to the early stages. As the story develops, Gwydion travels beyond Llewdor and uncovers truths about his own identity, tying his fate to the broader threat facing Daventry, where a three-headed dragon demands annual sacrifices.