Microsoft is celebrating a GTA 4 victory in the UK, with over 100,000 more units of the game having been sold in week one for Xbox 360 than PlayStation 3. Chart-Track data reveals week one sales of the game totalled 514,000 units on Xbox 360, compared to only 413,000 units on PS3.

"Grand Theft Auto IV has done phenomenally well this week with Xbox 360 version outselling PS3 in our stores," said Gerry Berkley, Trading Manager at Woolworths. "Xbox 360 console sales have seen a big uplift off the back of Grand Theft Auto IV launching. It's clear our customers see Xbox 360 as a great console for this incredible game."

Microsoft also notes that GTA 4 is now officially the most-played game on its Xbox LIVE service, with more than 9.7 million hours of online multiplayer logged and more than 31 million hours of GTA 4 game time overall.

Microsoft has also taken a swipe at its competitor, pointing out that the Xbox 360 is the only console that "renders Liberty City in all its 720p high-definition glory" - the PS3 version is reported to render the game at 640p.

"In the past week since the release of 'Grand Theft Auto IV', the bar has been set even higher for what the growing entertainment medium of gaming can deliver in the way of immersive, living worlds and exciting social experiences," said Chris Lewis, Vice President, Interactive Entertainment Business, Microsoft EMEA. "Today it has become clear that consumers are finding Xbox 360 the best way to experience Liberty City and we expect this trend to continue, especially with exclusive 'Grand Theft Auto IV' episodes coming to Xbox 360 in the Autumn. 'Grand Theft Auto' has a new home on Xbox 360, and consumers are discovering how our platform can enhance the experience like no other."

For more on Rockstar's latest head over to the GTA 4 game page.