Reah: Face the Unknown is a first-person adventure game with emphasis on exploration and puzzle solving.

When the planet Reah was first discovered, it was thought to be uninteresting and not worth colonizing, that is until a group of scientists discovered an ancient alien artifact on the planet's surface that allows people to travel to other dimensions. As a journalist, you are brought in to help document this new discovery and break the news to the rest of the world, but your curiosity gets the best of you and you step through an unstable portal too early. Now you are stuck on an alien planet in another dimension, in a strange alien city. You will have to use all of your wits and puzzle solving skills to get back home.