Time Paradox

During Metal Gear Solid 3: Snake Eater, if Naked Snake dies (or EVA, during one of the later sequences of the game) it comes up with the traditional Game Over page stating "Mission Failed". After a little while (or quickly if you select Exit instead of Continue) Mission Failed changes to "Time Paradox". This is obviously because of the fact that Naked Snake is revealed at the end of the game to be Big Boss, the father of Solid Snake, Liquid Snake and Solidus Snake, so if he was to die, the events of Metal Gear, Metal Gear 2 Solid Snake, Metal Gear Solid and Metal Gear Solid 2: Sons of Liberty, would not take place.

Also during the beginning of the game, there is a scene where Ocelot lies unconscious, at this point of the game Snake only has a tranq. gun. But on the second (or later) play-through he has the Patriot (The Boss' Gun). If you shoot Ocelot it comes up with the usual Mission Failed screen and Colonel Campbell yells at Snake.