TinyBuild is letting you download Party Hard 2 in its current Alpha 1 state. You can also pre-order on the site as well. Just click the button and you will be asked for an email address for them to send the links for the download.
Alternatively, you can go to https://www.humblebundle.com/tinybuild-bundle and at the bottom of the page, you can do the download from there without entering your email. Just click the Windows/Mac links to start the download.
are demos considered deals or more of a forum post?