Today, I completed the second example game found in "Programming Games for Atari 2600".  I was almost finished last night, but as usual, there were a few errors that crept in that resulted in the game functioning incorrectly.  I examined the code more closely and fixed the errors (mostly typos on my part) and today the game plays as it should.  I really enjoyed making this game and look forward to the next one...."Invaders"!

wallbreaker.bin