Topic on User talk:Dribbleondo
Okay, so here's something interesting. Putting in any random sequence of letters or numbers -- see here: https://imgur.com/a/s6h2JYe -- will simply create a new save folder for offline mode in AppData\Roaming\IO Interactive\Epic\
It is entirely possible to create and use a seperate ID, the game doesn't check to see if its valid with EGS, and it doesn't require one playthrough via EGS to use, making the game DRM-free and not dependant on EGS or IOI's servers.