DOS parameter codes:
Instead of running MK3 at the DOS prompt, enter one of the following:
mk3 60015 : gives you slow motion
mk3 8000 : turbo mode
mk3 12345 : tall characters
mk3 54321 : miniature characters
mk3 1111 : miniature characters that float
mk3 8888 : jumbo characters
mk3 1995 : shadow characters
mk3 831 : invisible characters
mk3 9966 : mirror mode
mk3 0666 : smoke enable
mk3 1000000 : shoa and motaro enabled in 2 player mode only.