O. Gromyko is among one of the best selling authors from Belarus. She writes novels of the fantasy genre in the Russian language and publishes mostly in Russian publishing houses (Blog of the author). A cycle of ironic fantasy novels about a witch named Volkha: "My Profession is a Witch" (Профессия: ведьма,2003), "Guardian Witch" (Ведьма-хранительница, 2003); "Chief Witch" (Верховная ведьма, 2004) and other have appeared under her name. In 2012, she released a book named "Space Ecologists" (Космоэколухи) about the "drivers" of spacecrafts. In 2014, she published a new volume of this novel series, titled "Space Psychologists" (Космопсихолухи).
Gromyko holds several international awards in fantasy literature. (1) Fantasy worlds created by O. Gromyko are closely related to Slavic mythology and scenery of her works has many connections with Belarus.