I'm starting to hate stretch goals which are just trying to suck out more money. Hell, be honest about it and I won't care, but don't treat it like porting to linux is a big deal with you are already aiming for Linux (through Android). Same with iOS and Mac i bet.
We will be making GODUS for the PC (Windows) and mobile (smartphones and tablets iOS and Android) initially. It seems from some of your comments and private messages so far that you would love Mac and Linux support. We'd love to support both, but we would require more funding than what we are currently asking for. We called it out on our front page, so please if you want a Mac or Linux version, back us and ask your friends to do the same, we will introduce Mac support as a stretch goal when (hopefully) we go above the amount we're asking for. We'd love to do Linux as well but again, we'd have to raise more than the amount we're asking for.