via Computer and Video Games

There's always something cool about seeing parts of a game the dev team tried to hide away, and one nifty modder in Japan has unlocked hidden content in the PC version of Call of Duty 4.

The secrets revealed by the modder, known as 'Qrysalis', are of a longer training mission, with extra objectives that see you running an obstacle course before entering the hangar to do the trial run on the shooting range.

"As you can tell, we decided to make it short and sweet for the final version of the game," said Infinity Ward man Robert Bowling, who posted a video of the extended level in action.

Bowling added: "Nice work Qrysalis, as long as you don't find our Brokeback Snipers / Hot Coffee moment with Price and MacMillian ... then we're all good."

Video clip here