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"It was region locked, but any Russian versions in libraries (such as mine) were still completely fine :)"
That wasn't the point I was trying to make though, it was the fact that they could modify the game once the person has activated it.

I knew there was game that gave gave a region-locked version, and because of the outcry customers a ROW version was later added, but I just wasn't sure if it was Borderlands 2 (which it turned out to be).