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Welcome to SMW Central!

SMW Central is the largest ROM hacking community on the internet, and the gathering place for all the resources you need to create your own ROM hack. We offer a large selection of completed hacks as well, ready for you to play! Traditionally SMW Central focuses on hacking Super Mario World, but over the years we've collected a ton of resources and hacks involving other games, too. Our community is ever-growing — sign up now and be part of it!


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Recent News

Two New Admins Have Arrived!

Please join us in congratulating our newest site Administrators, AmperSam and DeppySlide! Read more about it here.

The SMWC Hall of Fame

It gives me great pleasure to announce that on Saturday, February 17, we will announce the first inductees into the brand-new SMW Central Hall of Fame.

The Hall of Fame is a new, permanent addition to the site. A class will be inducted each year to recognize the hacks that made our community talk, the hacks that friends would recommend to their friends, and the hacks that we would put in a time capsule for the future to know what this year was like in SMW hacking.

View The First Inductees

Read More about the HoF

SMB3 Level Design Contest Results

The holidays are over and so is the SMB3 Level Design Contest! Thank you everyone who participated and congratulations to the winners!

SMB3 Level Design Contest Results

Latest Content

Offscreen Indicator

Screenshot This will display an 8x8 or 16x16 sprite tile at the top or bottom of the screen at Mario's X position whenever he goes offscreen. This way, the player can tell where he is even though they can't see… (read more…)

Switch Palace Switch

Screenshot A recreation of SMW's Switch Palace switches, down with using sprites for handling the pressed switch. It comes with two sizes: 16x16 and 32x32, the former of which has two separate graphics (one… (read more…)

Enter the Gizzverse

Screenshot After two music hacks, I said I wouldn't do another music hack. And yet, here we are. This hack is dedicated to my all time favorite band, King Gizzard and the Lizard Wizard. They are a… (read more…)


Screenshot A simple, vanilla-esque carriable crate sprite which floats in liquids. Open the .asm file for more info. Note that bringing custom carriable sprites through pipes has a tendency of breaking them.… (read more…)

Per-Level Overworld Music Fadeout Disable

This patch allows you to disable the music fadeout that happens when entering a level from the Overworld, on a per-level basis. This can be useful for example for levels that use the same music as… (read more…)