The game is exciting. It’s an FPS dream. Since 1996 I’ve had the chance to play this game. In FPS you get locked out in that position, against odds in a 3D virtual reality. The levels are well laid out for fast shoot em up traversal. While 2D games finish up your juice or MOJO in about under 5-10 minutes, in 3D you can last a lot longer, then the game just keeps going on forever. But it used to be really expensive upto a Rs 1 lac machine. In Doom 3 we get introduced to more complex story line with ancient civilizations along with a hitech aeronautics giant called UAC wanting to bring hell into the world. Doom 4 came out in an era when costs were reduced and game became more trophy or score oriented than story.