All of the Origin-exclusive Need For Speed games on PC has now been released on Steam.
Previously, EA has released the first wave of their back catalogue on Steam which includes Need For Speed Rivals, Need For Speed 2015 and Need For Speed Heat (which has cross-play).
Today, two more NFS games have been added: Need For Speed Most Wanted (2012) and Need For Speed Payback.
This means that you can now purchase all of the NFS on Steam. EA is gearing to offer EA Access- a monthly subscription of a EA games- to Steam this fall. And looks like the racing game series is all set for that.
Source: Need For Speed