RHEM I SE: The Mysterious Land is a first-person point and click adventure game with emphasis on exploration and puzzle solving. It is a remastering of the original RHEM with new areas and puzzles, and enhancements to the gameplay.

You have just arrived at RHEM in a mining cart. Discovering that you are trapped, you must find the fragments of a letter, scattered around RHEM, that will show you how to get home.