In 1982 Sega released Zaxxon for the video arcade. The most impressive aspect of this game revolves around it being the first to use an isometric perspective, simulating 3D graphics.
However, it changed drastically when it was ported to the Atari 2600.
When it was ported to the 5200 more of the original details were perserved.
For some cool gameplay with commentary, check out Stevie Strow’s video.
For more information be sure to check out the game on Wikipedia.
Zaxxon by Sega via Wikipedia