Game demos typically are little more than a bullet point in a publisher's marketing plan designed to give folks an early taste of what a game might end up being while simultaneously driving pre-order numbers northward. But for Trials of the Blood Dragon, Ubisoft is trying something different. If you download the, err, trial version of the game on PC and complete the available challenges within a certain threshold of perfection, you'll unlock the full version of the game. Of course, you'll have to suffer through using Ubisoft's Uplay interface to do so, but that's probably a lot less work than getting 15 faults or fewer across the some 30 available stages.