I have no idea why a game this old would need 2gb of RAM but I'm not complaining. If this was the version that got ported to the NES and not that other garbage, then this game would be a lot more recognized as the gem that it is. Was there even another game that attempted any kind of stealth like this before it? It's everything we know about more current MGS games, but in its most basic (in a good way) form. Still holds up and still very fun to play.