After completing the game, when you’re sent back to the title screen, you can also press B to select which world to start on. The World 1-1 in the HUD changes, then you have to do the continue trick - hold A and press Start.
I can finish the game on one life without warps, but I’ve never once been able to get the 1ups from a Koopa shell.
Edit: Another fun one is to play a bit of Tennis, eject the cart and insert SMB without powering off the system, then reset and do the continue trick. Tennis changes the memory value that SMB uses to tell which world you are continuing on, so you can play “weird worlds” like 63-1 that are generated from non-level data. Reset doesn’t clear all RAM. 😅
After completing the game, when you’re sent back to the title screen, you can also press B to select which world to start on. The World 1-1 in the HUD changes, then you have to do the continue trick - hold A and press Start.
I can finish the game on one life without warps, but I’ve never once been able to get the 1ups from a Koopa shell.
Edit: Another fun one is to play a bit of Tennis, eject the cart and insert SMB without powering off the system, then reset and do the continue trick. Tennis changes the memory value that SMB uses to tell which world you are continuing on, so you can play “weird worlds” like 63-1 that are generated from non-level data. Reset doesn’t clear all RAM. 😅