This is a trivia game. Somebody gives a hint/clue about a game, you try to guess the game's title. The Rules: One person giving a hint at a time, one game at a time. The first person to name the title goes next. Do not post a new hint until your answer has been confirmed correct by the person who stated the hint. If a couple of the people trying to guess the game come out and say "I give up", reveal the answer, unless of course there are more people saying to let it go longer. An example of a hint: "What game gets the most credit for being the first game?" The obvious answer would then be Pong. And please, don't let it be that easy. To start off: What game, originally for the PC, is famous for its fantastic physics?