I created a new class named 'Brick'. It's basically a panel with one added property. That property sets if it is breakable or not. I also created 1 new level with the bricks that cannot be broken. It's nearly identical to level 4, only the bottom tier is unbreakable. I also changed Panel1 and Panel2 to pnl_Ball and pnl_Brick. The unbreakable bricks are gray whereas the breakable bricks are orange.