Atari 2600 Atlantis is one of the best Atari 2600 games . Basically, you defend the underwater city of Atlantis with your three cannons against a variety of Star Trek-y looking spaceships. It’s no Missile Command clone, however; instead of bombs raining from the sky, the ships fly in a zig-zag motion across the screen and only attack towards the bottom. The goal in Atari 2600 Atlantis is to zap the ships before they get to that level, which is no easy feat. Like most Atari 2600 games Atlantis starts out quite easy but gets frenetic quickly. Atari 2600 Atlantis is difficult but a great game.