Sony Computer Entertainment Inc.'s release of a plethora of software titles in the coming month for the PlayStation 4 will be followed closely by its financially struggling parent company.

As the 2014 Electronics Entertainment Expo, or E3, opened Tuesday, Sony Corp. is betting that the lineup for the successful PS4 will help shore up the division's bottom line, which has been battered by its money-losing Vaio PC business.

But the electronics maker is likely to face a tough challenge in the game business from U.S. giant Microsoft Corp., which is targeting the same consumer segment with its Xbox One machine.