Jewels of Darkness (formerly the Middle-Earth Trilogy) is a trilogy of text adventure games by Level 9. The individual games were initially released separately in 1983. They featured some themes inspired by the books of J. R. R. Tolkien and so became known as the Middle-Earth Trilogy.

In 1986 the three games were revised, expanded and rereleased together as a compilation. For legal reasons the references to Middle-earth were removed and the trilogy was retitled Jewels of Darkness. The games now featured simple static graphics.