Statisticians The NPD Group (USA), Chart Track (UK) and The GFK Group (Germany) are apparently unanimous in their judgement that the multi-platform, Infinity Ward-developed, Activision-published Call of Duty 4: Modern Warfare is the world's Number 1 selling game of last year.

According to Activision - using figures provided by the above numbers-people, the game, "sold in excess of seven million units worldwide since its launch in November (of 2007)".

You will never guess what?

"We're very excited about this achievement especially given so many competitive titles this year," said Will Kassoy, senior vice president, global brand management, Activision Publishing.

Yup, excited. With 7,000,000 units sold on PS3, Xbox 360 and PC, we'd be a little more than excited. We'd be straight down to the local inn for celebratory beverages and a possible arm-wrestling contest with Infinity Ward.

However, according to various Internet-based rumours, it could be that the Infinity Ward boys and girls won't even be in the pub. It appears that Call of Duty 3 developer, Treyarch, is to get to make Call of Duty 5.

We'll keep you updated as soon as we know.