Incoming Transmission from Atari Mission Control circa 1982. Message as follows: "Your mission is to travel to alien planets, wipe out enemy bunkers, gather fuel units and make the solar systems safe for you and future generations of space pioneers." End Transmission.
I was a bit young to have played Gravitar at launch -- being just 3 years old at the time -- but I discovered it later in my life at a local arcade, pushed back in a corner, collecting dust. What attracted me to the machine was the awe-inspiring hand drawn artwork of the marquee and what I could see on the sides of the machine. Graphically, this game was highly outdated by then. It was a vector-based game (meaning it used a different monitor system) in a time of pixels and higher sprite counts (which is saying something since it was only about 1985).