Your Steam saves are located at %USERPROFILE%\Documents\Uncharted 4\Saved Games\ . The RG Mechanics version stores saves inside its own folder: Portable_Game\Uncharted4\Saved\SaveGames\ . Simply copy the .sav files across.
distributed by the group R.G. Mechanics. While such versions are part of gaming subculture, an informative essay on the actual game reveals why it remains a landmark title in the action-adventure genre. The Legacy of Nathan Drake: An Overview of Uncharted 4 Uncharted 4: A Thief's End rgmechanicsuncharted4athiefsend2015 portable
It doesn't write data to the Windows Registry. rgmechanicsuncharted4athiefsend2015 portable