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

R.I.P. SMWCentral Twitter Account (2012-2023)

Announcements will only be posted on our Discord server and the front page from now on.

Results of the 2023 Overworld Design Contest

The results of this year's OWDC are in, check out who won right over here!

PR Staff Appetizers.....I mean Applications

APPLICATIONS FOR PR MEMBER/HELPER ARE OPEN!!

We are looking for people to help with planning and hosting contests, as well as planning and assisting with our bigger events like C3. We have a lot of big projects in the works so we could really use some help with our regular slate of contests. Past experience judging or hosting off-site contests would be ideal but not necessary.

Please reach out to me or  idol if you are interested. Also, please specify if you are interested in being a full staff member or just a helper.

EDIT 8-2-23: Applications are CLOSED.

Latest Content

• Mario In Mushroom Rix Land 4 Trip To Nano Island
• Asterix & Obelix - The Olympic Games (Obelix)
• Sonic CD - Metallic Madness (Bad Future ~ Act 1)
• SMW Music Porter's Calculator (SMPC) v2.0
• Offscreen Indicator for Sprites
• Birdfish
• Flame Block
• Of cents, de-tuning and microtonal music

Mario In Mushroom Rix Land 4 Trip To Nano Island

FINALLY! After 1/2 whole years of hard effort work of developing my SMW Romhack game. I am finally now freaking finished working on Mario In Mushroom Rix Land 4!!!! Sep 18 2021 - Jun 18 2023.… (read more…)

Asterix & Obelix - The Olympic Games (Obelix)

Part of the Asterix & Obelix SNES soundtrack.
Could fit a minigame/miniboss theme.

Sonic CD - Metallic Madness (Bad Future ~ Act 1)

A terrible, no-good, awful factory from Sonic CD. The background from the source was too big for SMW's dimensions so it has been split into a lower and upper concentration. Contains flashing lights.

SMW Music Porter's Calculator (SMPC) v2.0

A multi-parameter converter for Super Mario World/SNES music porting, meant to be an utility tool to be used in conjunction with AddmusicK. Was designed to replace an ordinary calculator program… (read more…)

Offscreen Indicator for Sprites

This UberASM will show an indicator for sprites that are offscreen vertically. Check out the asm file for customization options.

Birdfish

This little guy from Super Mario Land 2 acts similarly to the vanilla jumping fish, but it always alternates one dive in water and one jump in the air. Additionally, it will hover for a bit when at… (read more…)

Flame Block

This Flame Block damages the Player and can be extinguished by a Sprite and/or the Capespin.
See ASM for more customization options.
Credits are not needed but appreciated.

Of cents, de-tuning and microtonal music

Hi guys, I am back with my updated introduction to xenharmonic music applied to AddmusicK. It has been entirely re-done with more information and Addmusic examples. Since I am no composer, the… (read more…)

Content of the Day

• Life Stealer
• Bottomless Pit Code
• Super Kekcroc World: Kekcroc in Space
• Sonic & Knuckles - Sky Sanctuary Zone
• Rise of the Robots - The Crusher
• Playersounds Compiled '22
• Star Revenge 0.5: The Unused Levels v1.1.1
• Boo Ring

Life Stealer

This block will steal a life from the player if he has more than one and then shatter. If he only has one, the block will simply kill him.

Bottomless Pit Code

Also previously known as 'Floor Generator', this makes it so the player cannot move horizontally when offscreen from below, which is useful for people wanting to prevent players from skipping parts… (read more…)

Super Kekcroc World: Kekcroc in Space

Here it is! A hack that takes place entirely in SPAAAAAACE. If you don't know what Kekcroc is, I don't blame you. Kekcroc is a meme from the depths of 4Chan. Kekcroc is a supposedly "lost" video… (read more…)

Sonic & Knuckles - Sky Sanctuary Zone

A layer 3 BG which has been shown at Winter C3 2023. You'll need a status bar for this and parallax scrolling can work. For great results, you'll need DKCR Styled Sprite Status Bar, Remove Status Bar… (read more…)

Rise of the Robots - The Crusher

Requested by Zavok.

Playersounds Compiled '22

This is a new compiled sample collection featuring 600+ instruments from the latest soundtrack releases and techniques achieved within the year of 2022 into a small yet compact set of instruments to… (read more…)

Star Revenge 0.5: The Unused Levels v1.1.1

This is the 0.5th in the "Star Revenge" Series of SM64 hacks. Going by the name, this hack is based on levels I made before SR1 and SR2. The 7 main courses of this hack aren't too complex and are… (read more…)

Boo Ring

This is a custom sprite version of the Boo Ring. It is more efficient than the vanilla version and quite customizable. You can set the number of Boos, space between each Boo, radius, speed, and… (read more…)