I don't know if anyone else has had this problem, but the controls seem to be non-responsive or get stuck sometimes on my computer. Other times the circle starts spinning when I'm not pressing any buttons and screws me up completely. I have a very good computer and the latest version of Flash so that's not the problem, I even set the game to low quality to see if it would help and it didn't.
Regarding everything else about the game...it was good, not great, but good. The whole idea is fairly new and hasn't been over-used, that was nice. The color scheme was boring, and in my humble opinion...ugly. It looked to me like you ripped off a bunch of graphics and put them together, a pokeball made the ball in the game, and a cog from Shadow Factory made the outside of the circle. The music didn't do it for me either.
Perhaps if there was more upbeat music and some brighter colors this game would be more fun to play for longer periods of time.
Over all good 4/5 and 7/10, I'm generous to games because I know they're harder to make than movies. Keep up the good work.