A different game where you are a soldier who breaks into a enemy's 
fortress. While you are not seen, the enemy's soldiers don't shoot you!
  Nowadays, Konami, the game developer, made a version of
Metal Gear, called Solid Snake, in doom style.


Metal Gear I





    

Commands: Cursor arrows    = Movement
          Space bar        = Shoot (When gun is loaded)
          Key M ou N       = Punch
          F1               = Pause
          F2               = Arms
          F3               = Equipments
          F4               = Radio



Metal Gear II - Solid Snake





    

  This new version, the soldier can crawl. Press N or M + Space.

Obs: There are english versions for both games.