He wrote 744 published books up to November 2020,[1] mostly in Hungarian, over twenty novels in Esperanto.

[2] He has been a notable figure in the world of Hungarian science fiction with as many as 60 novels[3] and several stories.

[4] Nemere alleged that the film Demolition Man plagiarized one of his novels.

He was twice elected as the president of the PEN International in the 1990s[citation needed]; but he was not a member of the Hungarian Writers' Union.

According to him he's the record holder of the most published books (800[7]) – beating Barbara Cartland.