I mean, if you go way way back to the days of Unreal Tournament 2004 and before (when Epic was still Epic Megagames) they were actually one of the few developer

I mean, if you go way way back to the days of Unreal Tournament 2004 and before (when Epic was still Epic Megagames) they were actually one of the few developers that supported Windows, Linux and macOS for most of their games.