When aiming at targets on the far right I can't seem to get it to hit, even though I think I'm doing things the same. But maybe I just suck?

Aside from the third and second from last targets I think it worked flawlessly. Maybe it was just me?

Whats up with the inverted mouse?

the 'hit' or 'miss' disappears too soon before the next one sets up... I didn't have time to see what the result was and had to look at the score to see if I'd missed or not.... my score was very low....

Well, I liked it. It's fun after a couple of tries. Here is what I would suggest : power bar a bit longer, contrasting colors when the crosshairs and hand overlap and at first I tended to go off-screen when I wound up for the longer throws, so I started to compensate by "grabbing" a centimeter above the green drag icon. Dunno how you could fix that.
Hope it helps.

Again, any input or suggestions/criticism is highly welcome and encouraged. If thousands of people are going to be playing this game, I need to make sure it's playable the first time through. Thanks, guys!