The creator of the latest Call of Duty video game has acknowledged that initial sales of the title are likely to be slower than last time round.

CoD: Ghosts launches weeks ahead of the release of Sony and Microsoft's new consoles.

As a result, Mark Rubin, studio head at developer Infinity Ward, said some gamers would wait for the new hardware to become available.

The previous game, CoD: Black Ops II, made $1bn (630m) within 15 days.

By the end of last year, more than 2.6 million copies had been sold in the UK alone - nearly double the number of tickets bought for the Avengers Assemble movie - making it the country's best-selling entertainment release of 2012.

"Next-gen has historically created a bit of a challenge for all games from a numbers standpoint," Mr Rubin told the BBC.

"It's definitely something we're aware of. I know talking to a lot of people, figuring out what they're going to buy is a problem.

Infinity have also mentioned there is A LOT OF WORK to be done on both platforms.

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