In conclusion, "Paranormal Activity 1 Vietsub" is a significant phenomenon in Vietnamese horror fandom. The film's success in Vietnam can be attributed to its well-crafted scares and the found-footage style, which appealed to Vietnamese audiences. The emergence of the Vietnamese subtitles version helped to create a sense of community among horror fans and sparked a wave of interest in horror movies in Vietnam. As the horror genre continues to evolve, it will be interesting to see how Vietnamese horror fans continue to engage with and respond to new films, including those with Vietnamese subtitles.