w7n here, I'm from China, I am quite skilled in Super Mario Bros. hacking. (I can't do 6502 assembly work yet...)
I come here for some knowledge in ROM hacking, and also I need to improve my English skills(Gonna handle the CET-4 next year, and CET-6 in the future). If anyone sees a grammar mistake or if you can tell me some expressions, just reply to me(Strange request?).
Japanese hackers make a lot of brillant SMB1 hacks, but in the RHDN database I only found my favourite hack, Extra Mario Bros. Here I have some Japanese SMB1 hacks, if you would like to know...
--Kamikaze Mario, 3,4,DX or DX+ recommended. Hacked by 79. Well-known for their mazing routes and puzzling maps, but unfortunately they must be rated 18+ only because the graphics of Mario.
--VS Airman, Hacked by ATA. Choose Mario or Luigi, and fight against Airman. You can even press Start to see the Mega Man style menu, and get E-supplyment. There is an unfinished work VS Yellow Devil, also hacked by ATA.
--Luigi no Nazo(The Mystery of Luigi), Hacked by ATA. Seems to be a common level, but after you defeat Bowser... Where's Luigi? Well, he's yours to discover. There are 3 endings(4 if a common death and then game over included).
--Hard Relay Mario, Hacked by Mana, Rei, SnowArrow, Quark, U1, 79. The game is hard enough because you need to use all kinds of glitches in SMB1. But the design is BEYOND GODLIKE!!!(Holy.... forget it.)