The demo for the hit snowboarding title Amped 3 just made it on to the Xbox Live Marketplace today without any previous announcements. Considering how this title was overlooked at launch because of games like Call of Duty 2 and Project Gotham Racing 3, hopefully this will help stir up some more interest. The 767MB demo starts off with an Easter egg challenge. After that, you can ride down the Northstar mountain on tube, snowmobile, hang-glider, and of course a snowboard. One Sled Trauma challenge is also available, so you can expect to get a lot for you bandwidth with this demo.