I thought it was pretty decent.
Ignore all the other comments here.
Gives a unique challenge!
Graphics can be improved, but the important part is playability and challenge.
Can be improved
Two major things for me, firstly being the ball moves too slow - the game would be made more challenging if you moved faster.
Secondly, The red lines against a red background aren't the easiest things to see - change some colours about and it'll be better.
The game is very slow paced and boring.
It's pretty simple for those who actually have the patience to move extremely slow for a half hour...
Which is pretty much nobody.
The game isn't good is what I'm getting at.
Better luck next time.