In January, US software company said Xbox One sales had crossed three million as of the end of 2013.

The console went on sale on November 22 in 13 countries, including United States, United Kingdom and Australia, a week before rival Sony Corp's PlayStation 4 was released.

Xbox One is a versatile, powerful machine that is speculated to deliver inventive high-definition games for a long time. On-screen menus used in this device are simpler and less cluttered than the Xbox 360's. The Xbox One uses custom-designed chips from Advanced Micro Devices Inc.

Sony said on Wednesday it sold over 7 million PlayStation 4 units as of April 6 and is struggling to keep up with consumer demand.