The game is too hard while moving the accelerating character-board with two keyboard keys. I would prefer to use mouse or to move. I don't like either the feature when the whole level restarts while you miss the ball - then I have a full room with same pieces to break again! You should balance this game more, and also setup the numbers placed off from other UI elements in correct places (in web build they seems so). It's also odd while you have the blocks having different art style onto them than the other graphics has.
Brick breakers does work and people have fun with them build after a build, but this genre shall has polished mechanics or it ain't not fun. Though the playing is challenging which might be a good thing, especially in the prison theme.