https://coryarcangel.com/things-i-made/2002-001-super-mario-clouds
“In this work, I took an old Super Mario Brothers Nintendo video game and erased everything but the clouds. This project was very much in the line of the stuff various BEIGE representitives (Paul, Joe, + Joe) were doing then. Anyway, after many years, I got alot of emails about this page, and realized there were some things I could have written better. Plus, I ended up changing the code cause my laptop was stolden (and the code along with it). So, I have redone this page below. In section 1 is the source code with commentary, and in section 2 is alittle tutorial on how to make your own version of this cartridge if u aren’t afraid of soldering irons…before we get started, if you want all the good stuff here it is: the ROM for this is here, and the source code is here. If you are just interested in learning how to make your own version, scroll down to section 2.”
