A video-game maker has had to release an update to their latest title after real-life sex-chat-line phone numbers were discovered in the artwork.

Naughty Dog, creators of the popular post-apocalyptic game The Last Of Us, told gaming site Kotaku that the error was down to "an artist's mistake".

The offending numbers appeared on an in-game poster for "pest control".

The update, version 1.02, has now changed the numbers and addressed other crash and connectivity issues.

The game's creative director Neil Druckmann told Kotaku: "That was an artist's mistake. What happened was they put some phone numbers in the game and then they thought they could just change the area code to 555, then it's invalid, because it's what they do in movies.

"But I guess that doesn't work when you have a 1-800 in front of it. It was just an honest mistake."

Sharp-eyed gamers who had spotted the numbers and rung them were surprised to hear salacious recorded messages.

BBC News