I just spent like 3 hours playing this game... and the best part is that I only got to the third level. Truly a difficult game, at least for me. The idea is cool and the graphics look good. The ball movement could be better in my opinion. I think the player should have more control of the ball, so for example stopping at higher speed would be faster. Overall a pretty fun experience (until you get really frustrated and rage quit).
Also it's nice to see other Unreal games here, I didn't know if anyone else was using UE here XD.