Grand Theft Auto: Chinatown Wars has been given a "Z" rating by the Computer Entertainment Rating Organization (CERO), Japan's version of the ESRB. While the rating is consistent with the rest of the Grand Theft Auto family - all titles in the series sport the "Adults Only" label - it does stand out for being the first Nintendo DS game to be marked as such.

Chinatown Wars will hit store shelves in Japan this autumn.

Source: GTA Chinatown Wars is the first Z-rated DS game in Japan - Joystiq