In terms of sales, Microsoft's Xbox One is losing to Sony's PlayStation 4 in the console war, but just barely. Now, Microsoft has thought of a way to outshine another unlikely competitor: gamers' old PlayStation 3 systems.

Microsoft announced that it will give gamers $100 worth of store credit in exchange for old systems. The company made sure to name the PS3 explicitly. The Xbox 360 S and Xbox 360 E can also be traded in to get the $100 credit. Customers do not necessarily have to use the credit toward a new Xbox One, but it is obvious that Microsoft hopes that gamers will decide to do so.

"Trade up and get your hands on the new Xbox One," the offer page reads. "Welcome to a new generation of games and entertainment. Where games push the boundaries of realism. And television obeys your every command. Where listening to music while playing a game is a snap. And you can jump from TV to movies to music to a game in an instant. Where your experience is custom tailored to you. And the entertainment you love is all in one place."

The deal is available until Mar. 2.

According to rumors, Microsoft has a few more tricks up its sleeve to push its sales numbers higher, and maybe even higher than those of Sony's PS4.

In March, the company will release an update to fix issues with Xbox One's Xbox Live feature as players have complained about the party chat feature. In addition, Xbox Live's special features will see better placement, and other system issues will be addressed.

Rumors claim that Microsoft also plans on releasing its exclusive employee-only white Xbox One to the public, as well as a cheaper Xbox One that does not have a Blu-ray disc drive.

Finally, Microsoft is rumored to be launching the Xbox One in additional countries this year. The first launch will take place in April in Argentina, Chile, Colombia, Denmark, Finland, Hong Kong, Japan, Russia, Singapore, South Korea, Sweden and Taiwan. In October, Microsoft will reportedly launch the system in China, Czech Republic, Egypt, Greece, Hungary, India, Indonesia, Israel, Poland, Portugal, Saudi Arabia, Slovakia, South Africa, Turkey and United Arab Emirates.

Early this month, Sony announced that it sold 4.2 million PS4s after its North American release on Nov. 15 and subsequent European and Australian Nov. 29 launch. Microsoft, on the other hand, sold over 3 million Xbox One consoles in 2013 since its Nov. 29 launch in 13 countries.