These are Michael Haneke's two "Funny Games." I've only seen the original German/Austrian version, the one with dark-haired Arno Frisch, not blond-haired Michael Pitt.
"Ringu 2" the first sequel in the Japanese movie franchise "Ringu" was directed by Hideo Nakata. He had previously directed the first instalment.
Hollywood's treatment of the franchise varies somewhat. After Gore Verbinski the director of "The Ring" refused to direct the sequel to the American film versions, Hideo Nakata was brought in to do "Ring 2"
Although the original "Ringu" and "The Ring" were similar, and the director of both sequels was the same, each one had plots that veered off in different directions from the other.