It's a cool sketch of a game, but the lack of explanation for the controls was a little frustrating at first. Like other reviewers, I think adding more word density would give more variety and replayability to the game. 

As an idiot, I wish the "missed all blocks" shouts were a bit less caustic... getting asked if I was even trying while I was actually trying to figure out how to move the paddle was really frustrating. (It's the arrow keys. I thought it would be the mouse for some reason, but it was the arrow keys. Still, I am probably not the dumbest person who will encounter the game, so a little blurb on the home screen like "Use your <> arrow keys to move the paddle" would be useful.)