In my latest episode I discuss more Atari 2600 prototypes. I think there will only be one more 2600 prototypes episode and that one will be about unfinished (unplayable) prototypes and ones that haven't seen the light of day yet. After that I will move on to prototypes from other systems like the 5200, Intellivision, Colecovision, NES, etc. I was really surprised by the large number of prototypes for the NES, but not actually as Nintendo were very particular about what they allowed to be played on their system.