Takashi Shimizu, the director behind every Ju-on related film save for the upcoming The Grudge 3, appears to be developing a video game for the Wii based on the horror series.
The cats at Worth Playing say the latest issue of "Famitsu" (a Japanese video game magazine) reports Shimizu is developing Feel for the Wii which looks like it ties into the "Grudge" universe. A teaser site has even been established ("Juongame" is in the URL) that features Toshio on the homepage.
If anyone can make heads or tails of the site and the information it holds, we gladly welcome your input!
Source: Worth Playing, Ju-On Game