Microsoft Corp. will rely on its Xbox 360 game console for longer than the previous version because it’s getting harder to get consumers to upgrade, the head of the company’s entertainment unit said.

The software maker will focus on improving the Xbox’s games and features rather than rushing to introduce a new model, President Robbie Bach said Wednesday at the Consumer Electronics Show in Las Vegas. The Xbox 360 started selling in 2005, replacing the original Xbox, which debuted in 2001.