The Sims 3 sold over 3.7 million units in its release month of June this year, making it one of the fastest-selling PC titles of all time.

The game, released during the first week of the month racked up those sales worldwide making it the best-selling title at retail in North America and Europe combined for the quarter.

Earlier this week its first expansion pack was announced - World Adventures - while the game's also been driving community and online item sales via its website.

Last August it was announced that the franchise to that point, including The Sims and The Sims 2 - plus expansions - totalled over 100 million unit sales.