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!
Calendar
Recent News
2024 Mosts Results!
Mosts results are out! View the results, and let's all celebrate 2024 as it rides into the sunet.
Hackjam #2 - User Vote
Hey Hackjam #2 fans, guess what time it is: It's time for the user vote! (I am not posting this an hour and a half later than planned do not concern yourself with my blunder)There are multiple awards for you to vote for, including Best Usage of Theme! More info on the thread
Link to the thread
72 Hour Kaizo Level Design Contest #2
Yellow, Red, Blue, Green...what's next? You have 72 hours to tell us....or, had them, as the contest closed already, but there's some cool stuff you can still! Some of them are even switch palaces!View the entries!
Latest Content
Nemo (Arcade) - Stage 1 ~ King Morpheus (First Section)
Not the Nemo from Finding Nemo Movie, but from the arcade game.
Happy New Year (2025).
Uses the second half of palette row 4.
This castle background is from arcade game called Nemo.
WARNING:… (read more…)
Lunar Magic 3.51
This is THE required tool to hack SMW.
This release of Lunar Magic is mainly just for adding support for custom overworld sprite list sizes, but it also has a few other minor changes and… (read more…)
Kirby's Block Ball - Stage 2
A good song that fits grassland levels.Hypnagogia
The wake-up call that slept before us...Am I still dreaming?
Sea Mine
The floating spike ball is officially called a mine but it doesn't actually behave like one because it doesn't explode. This one is an actual mine which will detonate itself.
Options… (read more…)
Electric Grand Piano
Samples of an electric grand piano (like Yamaha CP70/CP80) optimized for SNES.Bands like Genesis used it a lot.
Can be a little more plonky compared to an acoustic piano.
Button Switch
This pack includes an ON/OFF (or custom, if the address is configured) switch. Once Mario or a sprite steps on it, the switch status will change and bounce Mario up.
Includes a custom… (read more…)
Yoshi Coin Overworld Tile Locks
This patch will cause specific levels, pipes, or star warps to become unenterable/unusable until a certain number Yoshi coins have been collected. Two versions are included: one which uses SMW's… (read more…)Content of the Day
Magikoopa Boss
This is a Magikoopa but it acts as a boss, defeating it will trigger an exit.Requested by RollingRigatonis.
Walljump Blocks V3
This custom block package contains 14 different kinds of walljump blocks! Read the readme to see how to use these blocks.Mario Destroys the World
Mario is fed up with existence, he is going to do away with it all. Take a short journey to the end of the world with Mario. A 3-exit hack originally for Jikurein's vanilla contest. Enjoy! :)
Layer 2 Background Auto-Scroll
A simple code to make your backgrounds use auto-scroll. Includes options to customize the direction, speed and an option to disable the scroll in No-Yoshi intros.
Note that for this to work… (read more…)
Clear/Initialize Unused RAM v2.0
This patch clears the entire WRAM when the ROM is started. This fixes various weird problems, for example this. By using DMA and not a loop or anything of that kind, this patch is made as fast as… (read more…)Metal Slug 2 - Mission 6-1 (2nd loop)
The "second" background (the first one are the trees) of the mission 6-1 in Metal Slug 2.
SMW2+
My first and the first full-length Yoshi's Island hack ever released, containing 54 brand new levels.