super mario 3

As everyone knows, this is Super Mario 3. I used to have a lot of fun with it... Unzip it and the executable file is mario. Relive old memories... You know how you can transform and fly in Mario 3, right? Then, make a lot of transformations, which is a characteristic of Mario 3.. Have fun playing the game.. ^^
This is the key.
'F5'=SAVE
'F7'=LOAD
'O'=BUTTON A
'P'=BUTTON B
'['=SELECT
']'=STSRT
'Q'=EXIT
'SPACE'=MENU