WordMix 2.0 for Android 

Why did some dice turn black when I went to pick them up and they refused to move? It messed up my game and prevented me from adding letters above a short one to make it into a valid longer one, after having allowed the first letter to be attached turning the original green word red! There's nothing about black dice in the rules that I can see and the video showed an example of exactly what I wanted to do. Very disappointing for my first game. If it happens next time, it'll be my last!

Yay!