My first thought is that there might be some Kind of DRM involved, early access and dev versions might not have it but the full releases might.

When i installed Isaac on linux i didnt get any of my old gamefiles, do i somehow need to activate the Streamcloud? Also is there a another savegames folder on linux?

Of course, i gotta know when new stuff arrives

Rule 4 and 5 show how credible this admin is /s

To be honest, that would make me pay for the plugin.

Brilliant

Yes Daddy :)