Bad...
Well, for starters... everytime the CPU hit the ball, it slowed down to its original speed and from whatever the angle had been before, it returned to its original horisontal movement.
And when you hit the ball, if you time it correctly it will bounce like hell back and forth on the walls... only to fall back to YOU after it has reached about half way.
The paddles didn't feel solid because i hit the ball once, it went straight into me, bounced around inside of me for awhile wereupon if flew through me and he scored.
The ball also starts way yo close to your paddle if you drop the ball, thougth i had to move to the middle like the normal PONG but it started right in front of me, about an inch away.
Cant blame you for the graphics... since its PONG... The music were a bit annoying after awhile and it took about a second before it started looping again. PLAY button is really appreciated, altough it won't make much of a difference for this game.
Consider making a new version of PONG with some strange powerups or something like that. Alternate gamemodes and perhaps gravity.