Fortress of Narzod

The player controls a hovercraft on its ascent up a mountain range with the goal of reaching the fortress at its summit. Each screen is part of a roadway, which is defended by three waves of guardians. These waves of guardians consist first of the Doomgrabbers, then the Tarantulas and finally the Ghouls. Each wave makes its descent down the roadway and towards the player, which all of one wave needs to be destroyed before the next wave begins its descent. Contact with enemies