Not considering remasters or remakes, I've done it a few times if you count different localization.
I have both the Japanese version and Western version of several games.
This mainly came about back in the day when it was a lot more common for the Jp version of rpgs to be released some times years before they came out in the west, and my Japanese wasn't very good/non-existent.
A few I can think of:
Final Fantasy X
Xenosaga: Episode 2
In recent times I got Persona 5 in Jp and Eng.Last edited by Hiku - on 21 April 2018