Joust is translated very well onto these two systems. While the graphics have been simplified a bit, the arcade's game play is captured almost perfectly. Gravity doesn't seem to have quite the smae effect, and the eggs behavor differently, hatching both new riders and their mounts, but otherwise everything from the arcade is here.
(Note: The Atari 5200 and the Atari 8-bit computers have very similar hardware, and games were often published with the same code for both. Except for the 5200's analog contorllers, Joust looks and plays the same on both platforms.)
Grade for both: A-.