why does the NTSC version have two different demos? does it have to do with colliding with enemies? and why does the PAL version only have one demo? Thank you.

I discovered a strange behavior in my FCEUX. in version 2.1.0 if I run to the right and then ALSO press left, mario will stop. Instead if I press right and then left in version 2.6.4, mario stops... and goes back to the left!!!! it also happens in jumps! I use keyboard. I use same ROM (it's super ok), and I disabled L+R of course. Can anyone explain why this happens? Am I doing something wrong in the settings? thanks.

oh, thanks! and...why pipe is purple???

Technically, WHY the plant are invisible???
Thanks.

thank you. unfortunately sometimes I slow down a bit too much and the trick doesn't work, I would like to know if the movements of the 3 koopas are predictable just before meeting them, a bit like the last koopa in the staircase. so no one has ever created a speadsheet about it?

specifically the 3 parakoopas part.
how many patterns are there?
I know framerules, and I know kosmic's method of slowing down 2 frames and then going under the first guy and over the rest, but are there any techniques to know if i were to slow down for example 3, or 4, or 5 frames? is there a spreadsheet about it? purely for scientific interest. thank you.

and more:
what is bbbb technique?
thanks!!!

I LOVE this forum.

Hi everybody!
I cannot find a complete technical explanation of how to cause the flagpole glitch!
(I don't wanna an explanation how to do the glitch i.e. inputs, thanks)