I like what you've got going here, but I do have one problem. It may just be me, maybe you wanted it specifically designed like this. But I think you're after images shouldn't disappear over time. The fact that dice only move when you do combined with the fact that when you move your after image starts to disappear makes it really annoying to kill dice when you set up the right number in the path of a dice but by the time you move the amount you need to get the dice to reach the after image, it's gone away. I do see the reasoning seeing as you could just flood the screen with after images and likely win without even needing to try. And I don't really have an alternate solution for that. And this problem isn't a game breaker. It certainly adds to the strategy, making sure the black dice will actually reach your after image before it goes away. So basically I just started this comment with something I was annoyed with but the more I think about the decision making and reasoning behind the choice the more it makes sense. So yeah I guess now that I think about it I don't really have a problem with this game. Great Job!