Rhem 4 reveals another yet unknown part of the mysterious island of Rhem. The story continues where "Rhem 3: The Secret Library" ended, but the game can also be played independently of the Rhem Trilogy.
Rhem is an adventure game in which the player explores a barren, maze-like landscape of water ponds, walkways, and brick buildings with the aid of a partial map. The game has several puzzles involving machines and symbols.
In this third installment of the popular RHEM series of intricate pure-puzzle first-person adventure games, the adventures of brothers Kales and Zetais continue in the mysterious land of RHEM.