I meant xorg and wayland but I just tried everything.
Currently on wayland stellaris and EU4 won't start for me, I didn't even know stellaris was broken until now, that was one of the better working ones.
On xorg they will all start but games are offset and sit below the top bar in gnome, The mouse isn't offset so it's completely unplayable. One of them used to work fine in xorg though, not sure which.
Not sure what you meant, but X.Org is an implementaion of X11 so this doesn't make any sense.