Enjoy and/or discuss.
http://www.romhacking.net/hacks/1011/
"SUPER MARIO BROS Special X1 for NES is a altered version of the Super Mario Bros. Special for NES hack which was created by Karatorian. It is altered to more closely resemble the X1 version of Super Mario Bros. Special. The changes found in the hack include:
Title screen more closely resembles the X1 game.
World selection by pressing B.
Altered graphics such as dithering and a altered pallette.
The pipe entering cutscene at the beginning of some levels such as World 1-2 and 2-2 is done manually.
Ending message. A farewell message to Hudson Soft which closed down in 2012.
Note that this is based on the 1.0~rc1 hack of Super Mario Bros. Special for NES and will not contain any features of future versions should future versions be released.
The readme is in S-JIS format."