Pong but with twists is a neat idea, but this one is more frustrating than fun. The way the yellow squares and turtles affect gameplay is interesting, but it's let down by poor base mechanics. It's just a very poor pong clone; hit detection is not quite right on the edges, the bounce angle seems off and neither where the ball hits on the paddle nor the velocity of the paddle seems to affect the ball's velocity. That makes it very difficult to get the ball past the simple but effective AI. The minimalist, "my first project" feel and twisted classic gameplay is a good fit for so bad it's good, I just wish it worked a little better.
EDIT: Was this game updated? It's still not great, but seemed to register hits a little better when I tried it again today.