Source code of Atari games

It has been a long time since I looked at assembly code, but today an opportunity presented itself. The Source Code of Several Atari 7800 Games Released! It downloaded Joust to take a look and it is a thing of beauty, I think. Assembly was never beautiful I guess, but it sure got the job done. I sure do not miss assembly but the games are still around in various forms. I don't think anything I wrote even 20 years ago is still running.