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
OLDC4 Results!
The moment you've been waiting decades for is here! OLDC4 Results have arrived and are ready for your viewing!
OLDC 4 Results
15 Years of The SMWCentral Music Tourney!!
It's time once again to listen to some banging tunes as nominated by our community!! This year the prize will be free tickets to Nintendo World in Orlando, Florida!! Wow!!!!!
Click here to find out I was lying about the prize, but also to go nominate three of your favorite songs. Remember, the deadline is Saturday, 5/24, 4:00 PM EST!
Overworld Design Contest 2025
It's time for the 2025 Overworld Design Contest! Let's see all those fun and unique worlds!
Be sure to check out the Rules & Submissions thread to get started!
Latest Content
Super LAME World
Tired of hard hacks filled with challenges and no power ups? Well, Do I have a hack for you my friend, presenting "Super LAME World"! A Hack with micro levels that anyone can beat in under a minute… (read more…)
Super Tetris - Title (Music 1)
Requested by Win72010.A pseudo MS-DOS styled port of title theme from SUPER TETЯIS. Try to find a good use for this aside from title screens or cutscenes.
Adventure Island - Coyote
A coyote from Adventure Island. A flower is spawned in its place, and if player goes far enough past it, Coyote will spawn and try to catch up to the player. The color of the flower dictates what… (read more…)
Mega Man 4 - Pharaoh Man
This is MisterMike's rip. Give credit to him. I converted it to SMW usage.
I had to use 2 palettes as I wasn't able to squezze the 2 colors into palette 2.
The torchlight colors do animate like in… (read more…)
JukeboxBlock v1.1
This is a jukebox block. It changes the currently playing music each time the player presses UP or DOWN. You can configure which songs the jukebox will play and also how many songs it can cycle… (read more…)
Donkey Kong Country 2 Navigation Arrows
Remember carol's old DKC2 Navigation Arrows? They're back, in UberASM form!
What this resource does is show arrows in the directions Mario can walk in while on the overworld.
This originally… (read more…)
DMA Queue and Block Change Optimize v1.11
This is a patch that provides a DMA queue system, allowing you change GFX in VRAM easier. It also optimizes SMW's block change routine to allow more blocks to be changed in a single frame without… (read more…)
Johnny Test Whip Crack
The whip cracking sound effect from Johnny Test that probably gave you brain damage as a childContent of the Day
Super Linkdead World
Version 1.01 edited as of 12/23/15 - fixes various difficulty spikes, removes some invisible coin blocks, fixes difficulty spike in intro (AKA it's easier now!)
Version 1.02 edited as of 03/09/16… (read more…)
Super Mario Advance 4: Super Mario Bros. 3 - World-e
A short track that would best suit tropical overworld mapsFair Powerup Filters
This lets you set up 4 types of powerup filters in a per-level basis: small only, big only, no fire flowers and no feathers, taking in account your powerup status and item box item. Unlike most… (read more…)
SMW2+
My first and the first full-length Yoshi's Island hack ever released, containing 54 brand new levels.
Bonus
I got the idea from Black Squirrel's tileset. I drew it myself. Has a lot of stuff. It's easy to assemble in level, so no sample level included. Uses 4 palettes. Give credit, if used.
MegamanX - Met
MegamanX - Met:https://www.youtube.com/watch?v=8hM4QpO-3KY&feature=youtu.be
If the extra bit is clear it will shoot a bullet towards the player. If it is set it will not do that.
Jammin' Journey
Join Mario as he explores a new world! The princess has gone missing again. It is up to you and Mario to bring her back.
It is recommended that you have played the Original Super Mario 64 game… (read more…)
Normal Conveyor Slopes
These "normal" slopes will move Mario like if they were a conveyor. Includes an example list to show how to use; you have to set the acts like to both the two slope tiles and the so called "slope… (read more…)