.....gomen nasai

On the 2nd level of Mario 1. First you run through the lvl then you jump and get the flag. You get the fireworks then go through a pipe. You are now on the 2nd lvl the underground lvl. Now you go through the lvl then at one point you can break a block on top of the television screen. Jump through that block you broke start heading right above the television screen then you eventually get to a room.

This room has 3 pipes. They teleport you to lvl 2 lvl 3 lvl 4. You pick lvl 4. Then head through the lvl you find another underground lvl. Do the same thing. 3 more pipes in a room. Lvl 5 lvl 6 lvl 7. You pick lvl 7. It was something like that

.....wakarimasu ka?