Progress: 34/34 🎃 
(List mostly but not completely in order)
1. The Wolf House (2018)
2. Killer Klowns from Outer Space (1988)
3. Alucarda (1977)
4. Mad God (2021) 
5. Phenomena (1985) 
6. Pearl (2022)
7. It (2017) 
8. Cube 2: Hypercube (2002)
9. Hellraiser III: Hell on Earth (1992)
10. Hellraiser: Bloodline (1996)
11. It Chapter Two (2019)
12. Dracula (1958)
13. Akira (1988)
14. Shivers (1975)
15. Vampyr (1932)
16. Halloween (1978) 
17. Studio 666 (2022)
18. Freaky (2020) 
19. Lifeforce (1985) 
20. Stay Alive (2006)
21. The Lost Boys (1987)
22. Hellraiser (2022)
23. Baise-moi (2000)
24. The Phantom of the Opera (1925)
25. Them! (1954)
26. The Whip and the Body (1963)
27. The Crazies (1973) 
28. The Legend of Boggy Creek (1972)
29. Crash (1996)
30. The House of the Devil (2009)
31. Silent Madness (1984) 
32. Pennywise: The Story of IT (2022)
33. The Last Circus (2010)
34. Faust (1926)

See Cinemonster’s original post here

Start: September 15, 2022
End: October 31, 2022 

Watch and review all movies with tag HoopTober9 

How my list fulfills the requirements:

6 countries (co-productions are counted once per country) - America, Chile, Britain, Germany, Canada, Mexico, France, Japan

8 decades - 1920s (x2), 1930s (x1), 1950s (x2), 1960s (x1), 1970s (x5), 1980s (x5), 1990s (x3), 2000s (x4), 2010s (x3), 2020s (x5)

2 insect-centered films - Phenomena (1985), Them! (1954) 

1 horror film set in space or the future (relative to when it was released) - Lifeforce (1985), Akira (1988), Mad God (2021), Hellraiser: Bloodline (1996), Cube 2: Hypercube (2002) 

2 animated films - Mad God (2021), The Wolf House (2018), Akira (1988) 

1 bloodthirsty old person/people film - Pearl (2022) 

2 1970s regional US films - The Legend of Boggy Creek (1972), The Crazies (1973) 

The worst horror sequel from the 1990s that you haven't seen and can access. - Hellraiser III: Hell on Earth (1992), Hellraiser: Bloodline (1996), and Cube 2: Hypercube (2002) in spirit 

1 German Silent - Faust (1926)

5 Films from David Cronenberg, Ti West, Bill Rebane, Charles B. Pierce, William Grefe and/or Joy N. Houck Jr. - Shivers (1975), Crash (1996), The Legend of Boggy Creek (1972), The House of the Devil (2009), Pearl (2022)

2 Christopher Lee films - Dracula (1958), The Whip and the Body (1963)

1 film with a musician or band in it (A real life musician or band) - Studio 666 (2022)

1 Stephen King adaptation that is not the first go around - It (2017), It Chapter Two (2019)

1 Lon Chaney film. - The Phantom of the Opera (1925)

1 Tobe Hooper Film - Lifeforce (1985) 

Plus my own addition, all Halloween Horror Nights (L.A.) haunted house movies that I haven’t yet seen, or saw too long ago to remember - Killer Klowns from Outer Space (1988), Halloween (1978), Freaky (2020)

I will watch the three extra credit movies but I didn’t include them in this data

The only movie on this list that I’ve seen before is Halloween (1978) 🎃

NOTE: Substituted The Hunger (1983), Mahal (1949), La Llorona (2019), and Hatching (2022) with Stay Alive (2006), Hellraiser (2022), Baise-moi (2000), and The Lost Boys (1987). The list still meets all requirements, and I watched these movies during the time frame of Hooptober, so I decided to give myself credit for them to finish the challenge on time. Data has been updated to reflect substitutions, but still does not include the extra credit movies.