| MMio padre è innocente1997 · Screenplay | Screenplay |
 A Cat in the Brain1990 · Screenplay | Screenplay |
 Hansel and Gretel1990 · Director, Screenplay | Director, Screenplay |
 Escape from Death1989 · Screenplay | Screenplay |
 Bloody Psycho1989 · Writer | Writer |
 Jungle Raiders1985 · Screenplay | Screenplay |
 The Ark of the Sun God1984 · Writer | Writer |
 There is a Ghost in My Bed1981 · Writer | Writer |
 Sexual Doublecross1980 · Writer | Writer |
 La parte più appetitosa del maschio1979 · Writer | Writer |
 The Face with Two Left Feet1979 · Writer | Writer |
 The Squeeze1978 · Screenplay | Screenplay |
 Flatfoot in Africa1978 · Screenplay | Screenplay |
 White Fang to the Rescue1975 · Writer | Writer |
 Virility1974 · Writer | Writer |
 Whisky and Ghosts1974 · Writer | Writer |
 Manone il ladrone1974 · Screenplay | Screenplay |
 Seven Deaths in the Cat's Eye1973 · Screenplay | Screenplay |
 Death Uncertain1973 · Writer | Writer |
 Now They Call Him Sacramento1972 · Screenplay | Screenplay |
 A Noose Is Waiting for You Trinity1972 · Screenplay | Screenplay |
 Father Jackleg1972 · Screenplay | Screenplay |
 The Crimes of the Black Cat1972 · Writer | Writer |
 Watch Out Gringo! Sabata Will Return1972 · Screenplay | Screenplay |
 The House of Doves1972 · Writer | Writer |
 Night of the Scorpion1972 · Writer | Writer |
 Raped On The Beach1971 · Writer | Writer |
 Have a Good Funeral, My Friend… Sartana Will Pay1970 · Screenplay | Screenplay |
 Playgirl 701969 · Writer | Writer |
 One After Another1968 · Screenplay | Screenplay |
 Sartana Does Not Forgive1968 · Writer | Writer |
 I'll Sell My Skin Dearly1968 · Screenplay | Screenplay |
 The Killer Likes Candy1968 · Writer | Writer |
 Kill, Panther, Kill!1968 · Screenplay | Screenplay |
 Any Gun Can Play1967 · Screenplay | Screenplay |
 Electra One1967 · Writer | Writer |
 Kill Me Gently1967 · Screenplay | Screenplay |
 Every Man Is My Enemy1967 · Screenplay | Screenplay |
 The Big Hit of Surcouf1966 · Screenplay | Screenplay |
 Django Shoots First1966 · Screenplay | Screenplay |
 Countdown to Doomsday1966 · Writer | Writer |
 Special Mission Lady Chaplin1966 · Writer | Writer |
 Johnny Yuma1966 · Screenplay | Screenplay |
 Two Guns for Two Twins1966 · Screenplay | Screenplay |
 Knives of the Avenger1966 · Writer | Writer |
 Agent 3S3, Massacre in the Sun1966 · Screenplay | Screenplay |
 Seven Guns for Timothy1966 · Screenplay | Screenplay |
 Kiss Kiss, Kill Kill1966 · Actor, Screenplay | Actor, Screenplay |
 Balearic Caper1966 · Writer | Writer |
 The Sea Pirate1966 · Screenplay | Screenplay |
 Operation Counterspy1965 · Screenplay | Screenplay |
 Doc, Hands of Steel1965 · Writer | Writer |
 $100,000 for Ringo1965 · Screenplay | Screenplay |
 Assassination in Rome1965 · Screenplay | Screenplay |
 Agent 3S3: Passport to Hell1965 · Writer | Writer |
 The Revolt of the Seven1964 · Writer | Writer |
 The Ten Gladiators1963 · Writer | Writer |
 The Old Testament1963 · Screenplay | Screenplay |
 Revenge of the Black Knight1963 · Writer | Writer |
 79 A.D.1962 · Writer | Writer |
 Blood and Defiance1962 · Writer | Writer |
 Samson1961 · Screenplay | Screenplay |
 Goliath Against the Giants1961 · Screenplay | Screenplay |
 Conqueror of Maracaibo1961 · Writer | Writer |
 Quanto sei bella Roma1959 · Screenplay | Screenplay |
 The Warrior and the Slave Girl1958 · Screenplay | Screenplay |
