Thanks! I'll start on the h2h football game. Are all those early American football games so complex because they're trying to milk off Mattel Football success and imitate the concept?
Mattel Championship Baseball (the game kevtris dumped) is also very complex. The ones by Entex and Bandai are gambling minigames compared to it.
kevtris: 8048 is from what? The Mego Mini Vid game? As for Galaxian audio, there must be more to it than just decreasing frequency. If my ears are right, I hear a change in duty cycle time too. https://www.youtube.com/watch?v=z4XndQf6NnU