cybereality Concept was a modern day Eastern Europe kinda ghetto rooftops.
I used to do free-running like that in abandoned 90's early 2000's industrial environments and while we were lucky not to get hurt I'd have to advise against it now that I'm older and smarter. But maybe it would work as a game, yeah. To be fair most of the dilapidated soviet era industrial environments are cleaned up and gone now. At least in the Baltics.