In Tarkovsky’s Nostalghia Andrei meets and befriends a strange man named Domenico, who is famous in the village for trying to cross through the thermal waters of Bagno Vignoni with a lit candle. He claims that when finally achieving it, he will save the world. Before leaving, Domenico gives Andrei his candle and asks him if he will cross the waters for him with the flame. "as promised" is an interactive installation which responds to the candle scene in Tarkovsky’s Nostalghia. In order to watch the complete candle scene, the user has to spin the an amorphic cylinder’s cap, find the correct velocity and keep it constant.