Looks and sounds great, the tiny particle that plays when the ball moves is a nice detail which catches your eye so you see where to go next!
You smartly understood that the game is simple enough to where you can hit play, read the instructions and immediately know what to do and so didn't force a menu screen or separate tutorial.
The lives system is a nice touch especially when you are trying to beat the timer with only one life left, I only wish the player would slide across walls rather than stick to them. I also see that the player can clip through walls if you move the board fast enough though that did end up being pretty fun in emergency situations XD
Overall a well done submission!