Sex controversy over GTA game
Best-selling game Grand Theft Auto: San Andreas is being investigated in the US over reports that it contains sexually explicit mini-games hidden in its code.
The controversy surrounds a download available on the net which is said to unlock secret sex scenes.
Game makers Rockstar said they were complying with the inquiry, by the industry body that sets age ratings.
If the findings were to lead to an adult-only age rating, it could limit sales from major retail outlets.
Explicit acts
The Grand Theft Auto series of crime games have proved phenomenally popular. They are credited with kick-starting the driving-and-shooting genre of gaming.
The PlayStation 2 version of San Andreas sold more a million copies in the first nine days that it was on sale in UK last year.
But the game has also attracted criticism from those who say it encourages gratuitous violence as players immerse themselves in an underground world of LA gangs and gun-ridden ghettos.
Now it is under fire over whether the game contains hidden graphic sexual content.
Software code developed by GTA Dutch fan Patrick Wildenborg is said to have unlocked mini-games in the PC version of San Andreas that allows players to make game characters perform sexually explicit acts.