The rules:

31 horror films

6 countries (other than Italy or USA)
•Valerie and Her Week of Wonders (1970) (🇨🇿)
•Trouble Every Day (2001) (🇫🇷)
•Vampyros Lesbos (1971) (🇩🇪)
•La Mesita del Comedor (2022)(🇪🇸)
•Antrum (2018)
•Baba Yaga: Terror Of The Dark Forest (2020)(🇷🇺)

9 decades
•The Uninvited (1944)
•The Undead (1957)
•Castle of Blood (1964)
•Phantasm (1979)
•Waxwork (1988)
•Two Evil Eyes (1990)
•Eden Lake (2008)
•Pet (2016)
•Weapons (2025)

5 Zombie Films
•White Zombie (1932)
•City of the Living Dead (1980)
•Cemetery of Terror (1985)
•28 Weeks Later (2007)
•28 Years Later (2025)

2 Post Apocalyptic horror films
•28 Weeks Later (2007)
•28 Years Later (2025)

3 cult or conspiracy
•Antrum (2018)
•EHarvest (2025)
•Prime Evil (1988)

1 film from a Black director and black lead
•Def by Temptation (1990)

1 film from a Mexican or Central american director
•Cemetery of Terror (1985)

1 Canadian film
•Antrum (2018)

1 former soviet state film
•Baba Yaga: Terror Of The Dark Forest (2020)

The most popular 40s film
•The Uninvited (1944)

1 film about dreams
•Dead of Night (1945)

1 The animals are pissed at us
•Cujo (1983)

1 Silent film
•The Cat and The Canary (1927)

4 based on Novels
•Cujo (1983)
•The Curse (1987)
•Tales of Terror (1962)
•Dead Zone (1987)

Any film from THIS list
•Eden Lake (2008)

1 Ernesto Gastaldi written film
•All the Colors of the Dark (1972)

1 film from 1932
•White Zombie (1932)

A Tobe Hooper Film
•Toolbox Murders (2004)

The original list from Cinemonster HERE