AISSON doesn't work, is there a different cheat code or a setting I'm missing or something? Also, I know this post should probably go on category extensions, but the forums section is almost completely inactive

in the practice room the gecko code is AIEIUOOX in any case, i think it isn't allowed for runs to use the practice rom

So I got good news and bad news.... Kappa

The bad news is that no, you're not allowed to use the practice rom for AISSON runs. The good news is that I had this same problem when I tried running AISSON on nestopia (I speedrun on emulator) and I found that the code AIISON works instead! So just double i instead of double s. Hopefully that helps!

The AIISON code still doesn't work on pellsson with nestopia, like KilleDragon said use AIEIUOOX

well yeah it doesn't work on pellsson I was talking about the vanilla game. But I guess if you want to practice aisson on pellsson (which might have been your original question and I misunderstood) then yeah use that other code. Good luck with your runs! :)

Correct :) AIEIUOOX for smb 1 and AIUGSXOX for smb 2