IDtension is an Interactive Drama project initiated 10 years ago. It provides long term solutions to the problem of combining narrativity and interactivity. The demo consists of a playable text-based interactive drama called "The Mutiny". The user is given many possibilities of meaningful narrative actions (around 100 in the middle of the story), which are fully interpreted by the narrative engine to generate story events on the fly. IDtension is based on a narrative-centered goal structure, second order narrative predicates and a model of the user. Actions are selected according to an innovative history-based interface.