MetroMario / メトロマリオ (Ver. 1.001)

Description

Published on Feburary 2004. Author's explanation:

"This hack is characterized by a level structure that emphasises speed. 
Almost all stages have only 100 ingame seconds remaining, making it a racing game in a sense.

Therefore, the difficulty level is very high, and most people will probably give up after a few minutes.

In order to complete the hack, you must have precise controller skills and a strong spirit that does not waver no matter what extreme conditions you find yourself in. And you need to have the guts not to give up even if you die hundreds or thousands of times.

If you are willing to try, then by all means, give it a shot. When you managed to grab onto a flagpole, you will feel enlightened or something!

There are no techniques needed, no bugs, and no unreasonable tricks such as dying if you are unlucky (maybe).
Walljumping and clipping through walls by doing so are prohibited.
　Also, there are some stages where you have to reveal hidden coin blocks to proceed. 
There's some kind of foreshadowing or hints in some of the stages displayed.
　There may be some parts that are hard to notice. ...... Please understand this."

Please have a try and beat this work without the use of save states/emulation tools!