Yeah, sorry about that. haha. I don't have a mac / linux and due to some limitations with the text rendering framework used in it, I couldn't make an HTML build. :(
I am planning to do a massive overhaul on the game anyway, so when I get a new demo ready I would like to have a mac/linux and windows build for it (though i'll have to get some friends to help me with that. haha).
Sorry you couldn't play it! :(