Change #19 - it looks too much like a swastica.
Other then that, it was nice. Needs sfx. I think that if you made the walls more "bouncy" you could keep the friction low becuase it makes it fun to try and figure out how to bounce off wall to go fast enough to avoid missles.
Nice. I think that the icon shoudl "blink" when you have that bit of immunity right after you hit something so that you know when your immunity is over. Also I think maybe other dot enemies that could move about? That'd be sweet...all in all I enjoyed most of it. It starts slow but gets better.
Needs lives - otherwise it is a good game, perhaps some music or sound fx to touch it up. And maybe other "enemy" balls that try to knock you off...maybe these exist, but I didn't have the patience to see.
Not bad. It would be nice if it tracked your high score. I also feel like the game is pretty hard - I have only gotten above 300 a few times. It is also a bit confusing when the stack is too tall. I think that when the stack is just below the "discard line" you should still be able to play...so that the stack is kind of like a "meter" and when you overfill the meter (eg, try to stack a die that would overlap the "discard line") then the game ends. But it is enjoyable and addicting. The sound is nice too; not distracting but still adds to the experience.