At first, I totally thought the projectile will go in 3d, towards the horizon, but yea, that's just the background. :)
Otherwise, I love the environment and the style, I remember these kind of games used to be very popular, and to this day, it's good to break some blocks once in a while.
I also like the sound effects, very retro, works well with the overall theme.
Also, the level design is quite original, at least very different from the usual "there is a wall of bricks" cliche.