When Does "Metal Gear Rising: Revengeance" (2013) Take Place?
"Metal Gear Rising: Revengeance" is a spy video game written by Etsu Tamari with Hideo Kojima designed for the PlayStation 3 as well as XBOX 360 systems that released February 19th, 2013. So when is "Metal Gear Rising: Revengeance" set?
It takes place on the fictional Metal Gear timeline in the year:
We know this because a character clearly states 4 years have passed since the events of "Metal Gear Solid 4: Guns of the Patriots" (2008), which take place in 2014 AD.

2018 AD
We know this because a character clearly states 4 years have passed since the events of "Metal Gear Solid 4: Guns of the Patriots" (2008), which take place in 2014 AD.
2014 + 4 = 2018.
It is the last chronological game in the Metal Gear timeline. It can be played at its timeline point.