Handhelds through the Generations

[Final-Fan]

"Game Boy = Game Boy Pocket = Game Boy Light (All can only play Game Boy games and a very few specially designed additional carts as mentioned previously in this thread.)"

My understanding is that about 25% of GBC games were this type. That is not "a very few specially designed additional carts".

Disclaimer: I do not have independent verification on my information (unsourced statement on Wikipedia) so I could be wrong about the amount of games.

In any case it's not "the same" as PS1/PS2/PS3 because there are no PS2 games that play on the PS1 and there are no PS3 games that play on the PS2.

Also, the GBC was not "pretty much as different" from the GB as the DS was from the GBA. For instance: the GBC's processor is (based on a little research) the same as the GB's only twice as fast. The DS has a CPU basically the same (again, I think) only twice as fast as the GBA's as its secondary processor; the main CPU is a different type and twice again as fast. On another angle, the GBC's memory is 4x the GB; the DS's is over 10x the GBA's as well as a different type. And then there's the more obvious differences between the DS and GBA.