King's Valley is a classic puzzle game released in 1985 for MSX. The story revolves around exploring ancient pyramids to collect treasures while avoiding the vengeful mummies that inhabit them. As players progress through the levels, they must carefully manage their drilling and cutting equipment to avoid getting stuck and having to replay entire sections.
Gameplay involves using limited resources to navigate through the pyramid's treacherous terrain. Players must strategically plan their moves, taking into account the order in which they use their equipment, as a miscalculation can lead to frustration and repetition. The game also features a stage editor, allowing players to create and share their own puzzle stages with others.