I know this isn't quite what this thread is about, but I just wanted to say I wonder what would have happened had Metal Gear 2: Solid Snake got an SNES port that was released in America.
The whole series probably would have played out very differently, Metal Gear 2 is surprisingly similar to Metal Gear Solid in the way the story plays out and the events that happen, to the point that MGS is almost a semi remake of MG2, which I assume Kojima did knowing that MG2 was never released in the US but MGS would be.
But had MG2 come out in the US (let's imagine that the SNES port is more faithful than the NES port of MG1 was) that means that MGS would have had to be a totally different game, meaning that Kojima couldn't have gotten all meta with MGS2 and it's parallels with MGS.
So who knows how the series would have played out. I also wonder what it would be like had Konami made a Metal Gear for the Genesis in the vein of Castlevania Bloodlines and Contra: Hard Corps, a prequel starring Grey Fox maybe?
Edit: Deep Duck Trouble SMS to NES (18/15 colors):
Reduced sprites to 4 colors in pic b.
Symphony of the Night PS1 (reduced to 256 colors) to MD (96 colors):
Couldn't find a screenshot at the original resolution meaning the dither patterns are a lot less noticeable. Not sure I could reduce this below ~80 colors so maybe it should be seen as a 32X or PCE CD port instead.