I stumbled upon this site one day when I was trying to find minimalist game design contests.

http://js1k.com/

Javascript programs with <= 1K of code. Some with amazing graphics and the few games some have decent gameplay. One even plays Spider Solitaire. Another is a gravity game where you fire a rocket from one planet, and try to land it on another using gravity of the various bodies to guide it.

Now the data on many of these exceeds 1K. So it's not CODE + DATA <=1024 but still, some really amazing stuff. I can't help but try to share this find with you.