5/10
It's like space invaders pong. =D
Not that bad, and I'm not lowering my rating because it isn't the full version, I'm lowering it for other reasons, which I will explain:
Ball respawning: The respawn system is ridiculous. I missed on purpose and then by accident, and both times the ball respawned far from my paddle, heading straight down, and was already close to the bottom when it spawned.
More Fun: I'd say you need to add something like powerups or such. The game idea is fine, but it needs more spice, so to speak.