Not bad but really simple. I get the point of wanting to grab the old fashionned pong look, but 44 years have passed since then and pong has been released in many different versions on loads of platforms and websites. I think that if you actually want to make such a game, you should try to make it a little more interresting. Maybe add some colors, some music or anything really than just a plain boring black background with two white bars. Although I realize this wasn't meant as a best seller game and you did that as a time killer, so no stress, hopefully you can do better.