You don't need to download any files, just go to http://www.nightlightinteractive.com/files/ww.html and install the Unity Web Player. It's a quick installation and you should be ready to play in less than a minute!
Of course not! We had 10 days to create a game for the OUYA Create Game Jam (http://killscreendaily.com/create/) and the alpha demo is a slightly more polished version of that. We have a fantastic team of artists, animators, designers, and programmers who will be working very hard over the following months to produce the best game possible.
Yes, we will be setting up payments through Paypal and our website after our Kickstarter has ended. Stay tuned! We will be selling some of the merchandise from the Kickstarter on our website, so you can purchase additional copies of the game, plushies, etc. Some swag will be Kickstarter exclusive though.
Don't see the answer to your question? Ask the project creator directly.