There is a legend. In the heart of the desert, beneath layers of sand and stone, lies the tomb of the ancient sorcerer Shal'fokor. Within it rest thirteen magical cubes. Twelve bestow wisdom and wealth, but the thirteenth holds an unknown power: it can grant an unprecedented gift, or unleash an ancient curse.

Engraved on the faces of the cube are symbols that change with each moonrise - sometimes they shimmer with a blessed light, sometimes they exude darkness. No one knows in advance what the artifact has in store: a vision of the future, power over the elements, or the whispers of ghosts from the past that gradually rob one of their sanity.

For centuries, adventurers have descended into the tomb. Some returned transformed - with eyes full of secrets, others disappeared without a trace, and still others raved about shadows that followed them.

Only on Friday the 13th does the Thirteenth Cube appear in this world for a full day. Its silence holds the answer: will the encounter be a blessing, or a doom? Will you dare to obtain it?