- "Întunecare" _(Darkness)_: a science fiction trilogy consisting of:
"Cronicile Infernului: Geneza (Chronicles of Hell:Genesis);
"Cronicile Ifernului: Exterminarea" (Chronicles of Hell: Extermination);
"Cronicile Ifernului: Învierea" (The Chronicles of Hell: Resurrection).
Other science fiction novels published by Ion Manu are as follows:
- "Ultima redută /The Last Stronghold)"
- "Încotro (Whereto?)
- "Pelerinii timpului/Pilgrims of Time)
- "Mileniul negru (Black Millenium")
- "Când sfinții dorm/Whenever Saints Sleep".
Ion Manu also wrote short stories in the science fiction genre that were anthologized in:
- "Icar/ Icarus 4);
- "Galaxia '80 (Galaxy'80);
- "Vârsta de aur a SF-ului românesc/The Golden Age of Romanian Sci-Fi);
- "Povestiri științifico-fantastice" (science fiction stories) in Romanian magazines "Almanah Anticipația:
- Povestiri științifico-fantastice (Fantasy Almanac: ScFi Fiction), and "Fantastic Magazin;
- His short stories also featured in "Jurnalul SF/Sci-Fi Journal and in other magazines or newspapers.
Novels & stories for kids and fantasy-fiction lovers:
- "Misterele Castelului Bánffy( Mysteries of Castle Bánffy);
- "Legendele Castelului Bran (Bran Castle Legends );
- "Vrăjitorul din Oz: Întoarcerea în Țara lui Oz "(The Wizard of Oz: Return to the Land of Oz");
- "Umbra Dragonului/Shadow of the Dragon," and,
- "Legendele Carpaților "(Legends of the Carpathians").