Descpription:
The player controls a spaceship that can move left, right,
up and down around the lower one-third of the screen. The ship can fire a single
shot (called a "quark laser" in this game), which travels vertically up the screen.
Unlike similar games, where the player cannot fire again until his existing shot has disappeared,
the player can choose to fire another shot at any time; if the previous shot is still on screen it
disappears. Gorf consists of five distinct "missions", each with their own patterns of enemies.
The central goal of each mission is to destroy all enemies in that wave, which takes the player
to the next mission. Successfully completing all five missions will increase the player's rank and
loop back to the first mission, where play continues on a higher difficulty level. The game continues
until the player loses all of his lives. The player can advance through the ranks of:
Space Cadet
Space Captain
Space Colonel
Space General
Space Warrior
Space Avenger
with a higher difficulty level at each rank. Along the way, a robotic, voice heckles and threatens the player,
often calling the player by his current rank (for example, "Some galactic defender you are, Space Cadet!").