Hackers have unlocked violent content previously censored in "Manhunt 2" to give it a marketable rating. The game, initially given an "Adults Only" rating by the Entertainment Software Rating Board, went on sale in the U.S. on Wednesday with a "Mature" rating. Game publisher Take-Two Interactive Software Incoporated edited parts of the game, including blurring some of the most gruesome killing scenes, to get the less restrictive rating. It did not take long for hackers to defeat that blurring on the version of the game for Sony"s PlayStation Portable but the same has yet to be rpeated for versions on the PlayStation 2 and Nintendo Wii systems. The hack does not roll back all the changes that enabled the game to qualify for the "Mature" rating, and it requires some technical expertise and a PSP unit that is itself hacked to accept modified software.