This is my favorite spy game in the world.  It's based in the near future where there is flying cars, UFOs, and anything else futuristic you can think of.  It has awesome weapons, a creative variety of characters, an interesting story and many levels to complete.  To top it all off, if you don't like playing major missions alone, invite a friend to play co-op or activate how many simulants (up to 3)that you want to help you out.  However it's more fun with a human player.  Also, there are crazy combinations of multiplayer combat.  You can have up to 4 human players and 8 simulants and give them a specific personality.  Believe me when I say that it gets crazy!  It's a game that will forever be a Nintendo classic!  Perfect Dark Zero may have better graphics, but Perfect Dark for the Nintendo 64 has the best story and gameplay!  I recommend this game to those who like Bond, but feels there is something important missing - the whole idea of Perfect Dark is what is missing.