Thank you for your comments and interest. I could make a dowloadable version, but it would be a node-webkit package that would be quite big (about 100 MB, the HTML version is about 5 MB). Currently I am updating the game quite often and I don´t want people to be dowloading a big file plenty of times just for minor changes. When I have a more or less stable version (hopefully could be the current one) I will probably upload a downloadable version.