In a move sure to promot it to cult status, Wal-Mart and Target are pulling copies of "Grand Theft Auto: San Andreas" off store shelves after the video game industry's ratings board changed the rating on the game to "Adults Only". The ratings change will force Take Two Interactive to halt manufacturing on the game and cut its earnings forecast by nearly $50 million.  The Electronic Software Ratings Board (ESRB) on Wednesday changed the rating of "GTA: San Andreas" from M (essentially the equivalent of the film industry's R rating) to AO (the film equivalent of NC-17), following the revelation of an unlockable sex mini-game in the title. Wal-Mart spokesperson Karen Burk said the company is in the process of pulling the game from its shelves nationwide, which it expects to complete by end of day Thursday. "We do not sell games that are rated AO," she said. Retailers will have the option to continue selling the game with a new AO ratings sticker (which Take Two will distribute in the next few weeks), to replace it with a modified version which will include enhanced security, preventing users from being able to modify the game to see the sexual content or to pull the game from shelves altogether. (CNN)