My attempt at the Brick Out Game…
I’ve added lives and a different music track. You get 3 lives to start off with.
You can press M at any time to toggle the music and S to toggle the sound effects.
I’ve also changed the brick and paddle designs added explosions and a trail on the ball. Seems to play quite well.
Also, played with limiting the maximum velocity. Bit of Pythagoras going on there. Also modified collision code to look for minimum x and y velocities where the ball gets stuck in a loop. In this case if the x velocity is smaller than +/-2 it increases it slightly. Same with y axis and minimum velocity of 5
Let me know if you get past level 2 and what you think of the level 3 and level 4 designs… 
Latest version (unity 5 version so Web GL) uploaded at:
http://www.gamebucket.io/game/b1cdb253-0255-4c80-999a-d3385a8de14d