Well, it has been a long time since I updated this blog, and I figured I'd update it with a great piece of knowledge:

 

Step 1. Go to Level 1-2.

Step 2. Power up into at least Super Mario. Fire Mario is recommended.

Step 3. Go to the end of Level 1-2, do not enter the pipe at the end, or travel to the Warp Zone area.

Step 4. Stand on top of the pipe.

Step 5. Break the 2nd and 3rd blocks from the left of the pipe. DO NOT break the first block.

Step 6. Face left, standing under where the 2nd block used to be.

Step 7. Crouch.

Step 8. Jump straight up, then at the top of the jump, press Right.

Step 9. If you timed it right, you should now be scrolling to the right, through the blocks and pipe.

Step 10. Slowly move to the right, so you see just the first warp pipe.*

Step 11. Go down that warp pipe.

Step 12. You will be transported to World -1.

 

Currently, I don't know if you can truly exit out of the Minus World.

Each time you go through the pipe at the end, you'll be transported back to the beginning. And the clock won't reset, either!

I've been having discussions with other people on the Nintendo Forums, and there is a rumor stating if you collect all the coins in the level, and navigate through the level correctly, that you'll advance onto the next level.

 

In the Japanese (Famicom) version of the game, there were actually 4 "minus world levels", 0-1, 0-2, 0-3, and 0-4, that also had a castle at the end. But supposedly, it didn't make it into the American (NES) version.

 

 

If you haven't figured it out already, I'm the proud owner of a Nintendo Wii, and I downloaded the original Super Mario Bros.

It truly is the original; no glitches have been removed, everything's there that allows you to make the speed run.

Enjoy!