MegaMario SDL version 20140810 had been ported to OS/2-eCS
http://hobbes.nmsu.edu/h-search.php?key=MegaMario-SDL-
"In the game you play Mario and your task is to free his brother Luigi, who was captured by evil Bowser. Requires SDL-1.2.15 for OS/2."
Official Project URL: http://sourceforge.net/projects/mmario/
Port by: Andrey Vasilkin