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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

The 2024 Automatic Level Design Contest has started!

Dear [user]

This is an automated message to let you know that the 2024 Automatic Level Design Contest has begun. Please refer to the Automatic Level Design Contest rulebook to get started on your Automatic level.

Thank you and have a nice day!

72hoOWDC #1 - RESULTS!

Hey again overworld fans, that's right you guessed correctly, me speaking means that the RESULTS for 72hoOWDC are READY and HERE! Take a look, right here: Results Thread

New Submission Guidelines

We're announcing some changes to all submission guidelines on the site! Read about that here.

If you're a hack or resource creator be sure to read up on those, otherwise you can visit the new "Submission Guidelines" directory from the site menu.

Latest Content


Screenshot Nuatepra, launched in April '23 as a completely different project, is a collaboration between ocked & Aclais. While building, we kept our focus on flow and fun, while still offering a good… (read more…)

Boo Stream Tail

Screenshot Disassembly of the Boo Stream Tail, the minor extended sprite that the Boo Stream spawns.

Extracted from Thomas' all.log. Requires pixi 1.40 or later.

Triple Ball 'n' Chain

Screenshot This patch makes it possible to have a triple rotating Ball 'n' Chain by using sprite E0 (normally three rotating gray platforms) and setting the extra bit to 1. Update 2027/4/7 (CircleFriendo):… (read more…)

Exact Horizontal Scroll Disable

Screenshot Disables horizontal scrolling at an exact position. Unlike the scroll disabling block by Apollyon, this one ensures that the camera will stop at a precise distance from where the block is placed… (read more…)

ROMhack Manager (Spreadsheet)

Screenshot This automated table offers tons of level data from the vanilla game such as headers, graphics, exits and much more. Here you can look up all the settings of the levels. The spreadsheet also offers… (read more…)