Entries for the prize are accepted from authors who have reached the age of 18. Electronic books are considered according to the following criteria: only works in English and Italian will be accepted for participation, excluding non-fiction and children's literature. A collection of short stories may be submitted for the prize only if all stories are related to one main character. The text volume should range from 160,000 to 640,000 characters with spaces, equivalent to 4-16 author's sheets.