Unfortunately you can't. If you're talking about the original Super Mario game once you die, it's game over! However if you want to stop playing, just push pause and turn off your tv. You can always come back and play it later. Hope this helps.
--New Mario player 2
Unfortunately, no.
Like most NES games, there is no way to save your progress in Super Mario Bros.
You are probably talking about the one you need to get Rosalina in MarioKart Wii, true? A Super Mario Galaxy save is a save file created by Super Mario Galaxy, which is an awesome 3D platformer by Nintendo.
A save file should be created when you start playing Super Mario Galaxy.
super Mario BROS.
no you cant i suggest playing the other super Mario lands
Saving Super Mario Bros to your Nintendo Wii's Memory
Super Mario Sunshine has 3 save slots available. The three slots are labeled as "A", "B", and "C".
you can't. saving the game wasn't possible when super Mario bros. came out.
Mario is trying to save the princess
pause it and press the one that said save
you can't save smf level :/