The Daydreams Database of pre-Soviet cinema (https://daydreams.museum/en/) is the first scholarly database of feature films produced in the Russian Empire and shot in its former territories in the first years after the October Revolution. Daydreams contains the most complete filmographies, synopses, and iconographic materials (such as promotional stills, posters, and frame enlargements) for more than 2,500 films with over 6,500 images and more than 200 film librettos.