My favorite language is C++ and I feel most comfortable to stick to it.
I made a game in C++ primarily using the console output as a graphical interface: somewhat like that of dwarf fortress.
However I wish to connect my game to either Unity or Unreal so that I can take advantage of their graphic rendering.
Is it possible? Running a game on other program while separately running an application on Unreal or Unity for rendering purpose? Or should I just make a game from ground up on Unreal or Unity?