Thanks! Guys!
Yeah, it's simple that I will keep an unlocked ROM, you don't even know how many backups float here and there on my computer!
As to the 3-world privademo (private demo), I'll choose people when I'll beat it myself, you know, I'm not going to send a hack with secondary entrances broken or midway points obtained!
EDIT: Ok, the difficulty of this hack, besides my playing abilities, is really too hard, even for me, so what will happen if a bad player will play it? It will take a year to beat it. I don't say about the entire game, I say mainly about the second castle. GeorgeVSsonic, you saw screenshots, so you think this level is good, but believe me, if you mean that the wall always need to go horizontally on the top in the first room with the crusher, then this room is a big cutoff. Next, the midway part. You go into the second castle's gimmick room. Falling rocks, you know. Yoshicookiezeus! I don't know how are you playing, but you indeed aren't playing SMW to keep at least 5 powerups in a room with the rock generator. It's just impossible without a mushroom at every screen and a slowdown. The slowdown in the second room exist, I didn't mean the slowdown tool. Ahh, I never think things like that about levels, but I think I'll just make this castle again. This is just a ToTaL cRaP. Before testing, I can send you the world 2 castle and you will tell me the decision about remaking it.
...Huh?