The wall is a pyramid
Wide at the top, narrow at the bottom, so the easy shots are the cheap ones and the dark blocks at the peak take three hits each. Break a gap up one flank, get the ball above the wall, and it does the expensive work for you while you stand there.
Drops
Some blocks release a token when they break. Catch it with the paddle for a wider bat or a second ball. Two balls is chaos and you will lose one within ten seconds, but the score you bank in that window is worth the mess.
The paddle steers
Centre sends the ball straight back. The outer thirds kick it wide. The very edge is the only way to reach the top corners, and it is also how most balls get lost, so the trade is real.
It lived in image search
Searching a certain arcade title turned the picture results into a playable wall with the score in the corner. That was 2013, the game’s 37th anniversary, and it ran for years before being pulled.
Same ending as zerg rush. The exception is the maze at google pac-man, which is still exactly where it was.