Getting Stars on Your Save File
| Unlockable | How to Unlock |
|---|
| Sparkling Stars | Beat the game without Super Guide appearing. |
| Star 1 | Beat the game. |
| Star 2 | Beat every normal level |
| Star 3 | Collect all 207 star coins in the first 8 worlds. |
| Star 4 | Collect all 24 star coins in world 9. |
| Star 5 | Beat every level, find every secret goal and use all of the warp cannon. |
Making Mushroom Houses Appear
Save a Toad from a level where he's trapped to make a Mushroom House appear based on the last digit of the clock when you finish the level.
| Unlockable | How to Unlock |
|---|
| Gold Mushroom House | Clock ending in 7, 8 or 9 |
| Green Mushroom House | Clock ending in 0, 1, or 2 |
| Red Mushroom House | Clock ending in 4, 5 or 6 |
Unlockable levels
After you beat the game, World 9 is unlocked. Collecting all Star Coins in previous worlds unlocks the corresponding level in World 9. For instance, collect all the Star Coins in World 1 to unlock 9-1.
Hatless Mario
If you have 99 lives at any time, Mario will not wear his hat. Lose a life, and he'll put the hat back on.
Original End Level Fanfare
Beat the first level of the game or beat a level while rescuing a captured toadstool and the original fanfare from Super Mario Bros. 1 will play instead.
