emulation
Microsoft: Original Xbox games on Xbox One 'not impossible'
Now that the Xbox One can play Xbox 360 games using emulation, there has been a call to bring older generation Xbox games to the console.
Sony confirms PlayStation 2 backwards compatibility for the PS4
Sony has confirmed that the PlayStation 4 will soon be receiving PlayStation 2 backwards compatibility.
Microsoft: Xbox 360 emulation on Xbox One being 'thought through'
Microsoft is still thinking through its options as it works on ways to bring Xbox 360 titles to the Xbox One console.
John Carmack: Porting games to Linux not worth it
Improved emulation would be a better alternative