FAQ:

Super Mario Land 2 DX is a color hack for Super Mario Land 2 in the same vein as Link’s Awakening DX. It is completely done in ASM and takes advantage of some of the unique features of the GBC hardware, so it doesn’t work with classic Game Boy.The aim of this hack is to make it look as official as possible and to document it the best I can. It started as a quick and dirty side project to document a colorization project (as my code for For the Frog the Bell Tolls DX is a mess), but I’ve ended up investing a lot of time polishing it and now I want it to be a full-fledged colorization hack.Aside from the colorization, I’m thinking of adding and changing around a few things, but maybe I’ll just release two patches - one for “purists” and another one that includes elements from modern Mario games, including the addition of Luigi with his own physics:Here is an old video of the hack in movement:It’s already out! http://www.romhacking.net/hacks/3784/ By any means, that's my baby and I want it to be beautiful. But I'll release this hack first.