As a kid, I never owned a 2600. We had a Colecovision at home. I remember walking by Atari carts in stores and wanting them, for no other reason that the "27 Video Games" exclaimed on the package. I didn't know at the time that it wasn't as I imagined in my head, but I can imagine that was a pretty big selling feature for the system and games.   I know what the switch does as far as the player is concerned, but what is actually involved technically? Is it something as simple as developers