Speculating about Metal Gear Solid Ground Zeroes is difficult, since we don’t know exactly when the game will take place on the Metal Gear timeline. The part where Snake infiltrates the Cuban prison camp must be a short while after Peace Walker, but for all we know the game could cover different time periods. The safest thing to assume right now is that it takes place somewhere between Peace Walker and Metal Gear 1, in other words, between 1974 and 1995. Most likely the late 70s and early 80s. That means there are a lot of possibilities for events that could be covered in this game. Here are five of the most exciting options.