As the punny title says, identify this path-breaking game which achieved many things for the first time and paved the way for one of the most commercially successful gaming paradigms ever.

If you have some extra time, let us know a few firsts this thing achieved.

Cracked by: priyananda , udupendra , varuns88 , akhi , shashank , Dibyo , madhur.

Answer:

Maze War
leading to First person shooters, gaming over a network and many others. Take a look at
http://en.wikipedia.org/wiki/Maze_War