Login and Sign upare no longer active and do nothing because the Steam release won't need that information as it will just pull from Steam itself.
There are some Mac users that have been playing the game through Wine just like you so there is some success there, but obviously I cannot officially support that. But good news, a Mac and Linux build is in the works once build 0.82 is released. 🙂
Little sneak on a highly requested feature 🙂
