Top 8 in Top 10 scariest horror movies about summoning games.
Ringu
Ringu is a 1998 Japanese horror film directed by Hideo Nakata, based on the 1991 novel by Koji Suzuki. It stars Nanako Matsushima, Miki Nakatani, and Hiroyuki Sanada, and follows a reporter racing to investigate the mystery behind a cursed tape that kills viewers seven days after viewing it. It was titled The Ring (stylized as ring) in English in Japan and released as Ringu in North America. Ringu and its sequel Spiral were released in Japan at the same time. Upon its release, Ringu was a huge success at the Japanese box office and was critically acclaimed. It inspired numerous follow-ups within the franchise, popularized J-horror internationally, and sparked a trend of Western remakes, beginning with the 2002 American film The Ring.
The film is about a videotape that was accidentally recorded in the Izu region, Japan. Anyone who watches the tape will die within a week of viewing the tape. The first victims of the tape were four schoolgirls, including Tomoko, Asakawa's niece. While investigating Tomoko's death, she accidentally gets caught in the tape's curse, taking the lives of her son and ex-husband. The determination not to let their son die has led the two to work day and night to find the culprit of the mysterious videotape while the lives of all three.