Stellar 7

The player's tank, the Raven, has a front-facing cannon with an unlimited supply of bullets. The cannon can fire up to two shots at a time. The tank also has a cloaking device that, when triggered, renders it invisible to enemies for about a minute. Gauges on the right side of the screen indicate the amount of shields and power remaining.

The tank starts with enough power to cloak twice, and power slowly trickles away as the time passes. The game ends when either shields or power runs out.

Gir Draxon, an evil alien overlord in charge of a powerful interstellar empire has conquered a range of star systems and has now arrived in the Solar System on Mars, intending on crushing humanity. The hero of the story has a super-tank that he can use to defeat Draxon's forces, though it was called into service before being finished and thus is protected only by energy shields and has no armor. From a game mechanics perspective, this explains why the tank simply is destroyed when its shields (hit points) run out. The hero fights his way through 7 star systems controlled by Draxon's empire, until arriving on the last planet - Arcturus itself - to face Gir Draxon. The alien overlord confronts the hero in personal combat in his own super-tank; when defeated, an escape pod is clearly seen rocketing off into space, making it clear that Draxon survived.

The third game in the series, Nova 9, vastly expanded the in-game plot, added cut scenes, dialog, and more story-related tension. Not much information is provided about the world's background at the time.

Softline stated in 1983 that "combining first-rate graphics and sound effects with fast-paced, arcade-style excitement makes Stellar 7 hard to beat in every sense". Video magazine reviewed the Apple II version of the game, describing it as "a severe test for even the most skillful home arcaders" whose "varied action makes it a particularly satisfying game for solo players". Creative Computing in 1984 described Stellar 7 on Apple as an excellent Battlezone adaptation. Praising its 3-D realism, the magazine concluded "Play it once, and you are forever addicted".

Tom Clancy in 1988 named Stellar 7 one of his two favorite computer games, stating that "it is so unforgiving, it is just like life". In 1991 the DOS version of the remake received 5 out of 5 stars in Dragon.