The only 8-bit Metal Gear worth mentioning, to be honest, is Metal Gear 2: Solid Snake, an incredibly ambitious stealth game for 8-bit standards, complete with a ton of immersive mechanics, dialogue options, a deep plot, and some important plot details that would impact Metal Gear Solid, eight years later. If you really want to know why Snake respects Grey Fox so much, or what the hell Zanzibar even is, you have to play Metal Gear 2.