Developer - Roklan Corporation
Publisher - CBS Electronics
Release - 1982
Platform - Atari 2600
Number of players - 1P
Genre - Action
from the Interstellar Space Force capable of moving freely on all directions around the lower third of the screen in a attempt of overthrowing the Gorfian Empire from conquering Earth across five distinct missions, each one having their own distinct playstyle and set of enemy patterns, while the central goal of each mission is to destroy all enemies in that wave and advance into the next mission.
Successfully completing all five mission increases the player's rank, which represents the current difficulty level of the game, and loop back to the first mission where gameplay continues on a higher speed and difficulty until the player loses all of their lives.
Before starting a new game, players can buy up to seven additional lives by inserting more credits into the machine and a extra life is also granted after clearing the first five missions. Unlike similar games where the player is incapable of firing again until the existing shot on the screen has disappeared, the ship is equipped with a laser cannon capable of firing a single vertical shot called a "quark laser" and players have the ability of shooting again at any given time to the enemies, cancelling their previous shot that was present on screen.
Players can advance through the ranks of Space Cadet, Space Captain, Space Colonel, Space General, Space Warrior and Space Avenger, which increases the speed and difficulty of the game as well as introducing more enemy patterns. Along the way, a robotic voice heckles and threatens the player, often calling and mocking the player by their current rank (for example, "Some galactic defender you are, Space Cadet!"). Depending on the version, the player's current rank is displayed via a series of integrated lit panels on the cabinet.