On a frosty night in the city of Hultog, a ring was stolen. Now it's yours, but your partner has been taken in exchange. Can you save her? Can you handle the power of the Ring of Thieves?
This is a solitaire adventure - a close cousin to the Choose Your Own Adventure "pick-a-path" stories you may have read years ago, or gamebooks where the the decision-making of pick-a-path is augmented with dice and a game system. The upshot is: it's both a fantasy short story, and a game.
(from the ReadMe distributed with Ring of Thieves)