In the 1980s and early 1990s, Cat 3 movies were often low-budget, poorly made, and geared towards a niche audience. These films frequently featured graphic content, including sex scenes, violence, and gore. While some Cat 3 movies gained notoriety for their explicit content, others were criticized for their lack of artistic merit.
Gregor's Grindhouse Top 30: Hong Kong Category III Movies - IMDb