| 2025 | A Música de Erich Zann - Original Story |
| 2024 | Dagon - Short Story |
| 2024 | The Statement - Writer |
| 2024 | H. P. Lovecraft's The Old Ones - Author |
| 2023 | Suitable Flesh - Short Story |
| 2023 | Ancient Lore - Writer |
| 2023 | The Innsmouth School for Girls - Writer |
| 2023 | Ex Oblivione - Writer |
| 2022 | Alle Montagne della Follia - Original Story |
| 2022 | The Hound - Original Story |
| 2022 | H.P. Lovecraft'ın Cadı Evi - Short Story |
| 2021 | Lovecraft's Nyarlathotep - Writer |
| 2021 | Altrove - Original Story |
| 2020 | La Poésie et les Dieux - Writer |
| 2020 | The Ghost Writer Show - The Call of Cthulhu - Writer |
| 2019 | Psychopompos - Original Story |
| 2019 | Uzaydan Gelen Renk - Short Story |
| 2019 | The Music of Erich Zann - Story |
| 2019 | The Outsider - Writer |
| 2019 | Das Bild im Haus - Original Story |
| 2018 | Herbert West: Reanimator - Original Story |
| 2018 | Howard Lovecraft & The Kingdom Of Madness - Author |
| 2018 | A estranha casa na bruma - Story |
| 2018 | Le montagne della follia - Original Story |
| 2018 | Le montagne della follia - Writer |
| 2017 | H. P. Lovecraft Film Festival Best of 2017 - Writer |
| 2017 | Пёс - Short Story |
| 2017 | The Terrible Old Man - Story |
| 2017 | Howard Lovecraft & the Undersea Kingdom - Author |
| 2017 | The Colour Out of Space - Story |
| 2017 | Memory - Story |
| 2016 | H. P. Lovecraft Film Festival Best of 2016 - Writer |
| 2016 | Hypnos - Writer |
| 2016 | Howard Lovecraft & the Frozen Kingdom - Author |
| 2016 | Return to Providence - Original Story |
| 2016 | H.P. Lovecraft's The Beast In The Cave - Writer |
| 2016 | At the Mountains of Madness - Novel |
| 2016 | The Last Case of August T. Harrison - Writer |
| 2016 | A Cor que Caiu do Espaço - Writer |
| 2015 | Innsmouth - Writer |
| 2015 | La nit de l’oceà - Story |
| 2014 | Call Girl of Cthulhu - Author |
| 2014 | El modelo de Pickman - Story |
| 2014 | The Thing on the Doorstep - Writer |
| 2013 | Banshee Chapter - Short Story |
| 2012 | The Wooden Mirror - Original Story |
| 2012 | The Statement of Randolph Carter - Story |
| 2011 | The Curse of Yig - Original Story |
| 2011 | Karanlıktaki Fısıltılar - Novel |
| 2011 | Shadow Beyond Time - Original Concept |
| 2010 | Die Farbe - Short Story |
| 2010 | La herencia Valdemar II: La sombra prohibida - Author |
| 2010 | Pickman's Muse - Writer |
| 2010 | Lanetli Miras - Original Story |
| 2010 | The Silver Key - Story |
| 2009 | Cadılar - Short Story |
| 2008 | Colour from the Dark - Story |
| 2008 | Beyond the Dunwich Horror - Story |
| 2008 | Re-Animator: 1942 - Story |
| 2008 | Pickman's Model - Short Story |
| 2008 | Pickman's Song - Original Story |
| 2007 | H.P. Lovecraft's The Terrible Old Man - Story |
| 2007 | H・P・ラヴクラフトのダニッチ・ホラー その他の物語 - Original Story |
| 2007 | The Tomb - Novel |
| 2007 | Cthulhu - Novel |
| 2007 | Chill - Story |
| 2006 | Serin Hava - Short Story |
| 2006 | The Other Gods: A Tale of the Dream Cycle - Writer |
| 2006 | From Beyond - Short Story |
| 2006 | Beyond the Wall of Sleep - Writer |
| 2005 | Dreams in the Witch House - Short Story |
| 2005 | The Call of Cthulhu - Short Story |
| 2005 | 13:de mars 1941 - Story |
| 2004 | Innsmouth Legacy - Story |
| 2003 | The Dream-Quest of Unknown Kadath - Original Story |
| 2003 | Beyond Re-Animator - Characters |
| 2003 | An Imperfect Solution: A Tale of the Re-Animator - Story |
| 2003 | Pickman's Model - Short Story |
| 2002 | Maria's Hubris - Short Story |
| 2001 | Dagon - Novel |
| 2001 | Dagon - Original Story |
| 2001 | The Terrible Old Man - Short Story |
| 2001 | Nyarlathotep - Short Story |
| 2000 | Rough Magik - Idea |
| 2000 | Chilean Gothic - Original Story |
| 2000 | Cthulhu - Writer |
| 1999 | 黒の断章 - Story |
| 1999 | Cool Air - Original Story |
| 1998 | Return to Innsmouth - Writer |
| 1997 | Bleeders - Novel |
| 1996 | Castle Freak - Short Story |
| 1994 | Lurking Fear - Short Story |
| 1993 | Necronomicon - Author |
| 1992 | The Unnamable II - Characters |
| 1992 | インスマスを覆う影 - Book |
| 1992 | La mansión de los Cthulhu - Story |
| 1991 | The Resurrected - Original Story |
| 1991 | The Lost Child - Writer |
| 1990 | Bride of Re-Animator - Characters |
| 1989 | Dark Heritage - Short Story |
| 1988 | The Evil Clergyman - Story |
| 1988 | The Unnamable - Original Story |
| 1988 | The Testimony of Randolph Carter - Original Story |
| 1988 | Pulse Pounders - Story |
| 1987 | The Curse - Short Story |
| 1986 | Ötelerden - Novel |
| 1985 | Re-Animator - Novel |
| 1985 | Re-Animator - Story |
| 1981 | Pickman's Model - Short Story |
| 1980 | The Music of Erich Zann - Short Story |
| 1978 | Nem Pássaro Nem Peixe - Short Story |
| 1975 | H.P. Lovecraft: Schatten aus der Zeit - Original Film Writer |
| 1975 | The Whisperer in Darkness - Story |
| 1970 | The Dunwich Horror - Novel |
| 1968 | Curse of the Crimson Altar - Novel |
| 1967 | The Shuttered Room - Book |
| 1965 | Die, Monster, Die! - Short Story |
| 1963 | The Haunted Palace - Short Story |
| 1961 | La marca del muerto - Short Story |
| L'étrange collection - Author |
| La chose dans la clarté lunaire - Author |
| La Aventura de Sandra Munt - Original Concept |
| In the Grip of Terror - Original Story |
| Tales from Beyond - Original Story |
| Dunwich - Short Story |
| In the Vault - Story |
Duvar