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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


So after a lot of thought, I am sad to announce the retirement of KoopaCraft. ⛏️

Don't panic, it won't be immediate! We still have a good couple of months left if you want to play.

For all the info, please take a read of this post:

"Chocolate Rain" is a song by American singer Tay Zonday. It quickly became popular after the music video for the song was uploaded to YouTube on April 23, 2007, and has since been viewed more than 135 million times. "Chocolate Rain" was ranked as the hot

Oh yeah, we just started our latest Chocolate Level Design Contest!!!

View the rules thread here, and remember that you have until April 17, 2023 to make a level!!

120hoSPC #10 Has Started!

It's time for our latest 120hoSPC Contest, and we've got a brand new theme this time! I mean it'd be pretty silly if we reused a theme for a contest, so I'm not sure why I pointed that out. #wario{-_-?}

View the submission thread here. Remember, you have until Saturday, March 18, 2023 at 4:30 PM EST to submit your entry!


Latest Content


Screenshot Clawgrip from SMB2. Has numerous capabilities as far as customization goes; how fast it moves or throws rocks, how many times it goes back and forth or how many rocks it throws, as well as the… (read more…)

Status Bar NMI Optimizer

This patch rewrites the Status Bar NMI uploader to be faster (no ugly loops, yes ugly optimizations) saving about 0.74 scanlines of v-blank processing on SlowROM/SA-1, or 0.56 on FastROM. No free… (read more…)

New Donut Blocks

Screenshot These blocks try to represent the Donut Lift Blocks from newer Mario games, more specifically Super Mario 3D Land. There are two options in the ZIP file: Normal Donut Block This folder… (read more…)

Harmful V2.0

Screenshot Harmful is a kaizo intermediate hack consisting of 17 exists with fun and difficult levels with some tight sections. This hack includes custom sprites, backgrounds and music. Each level contains a… (read more…)

Magic Limit

Screenshot Limits the number of spawned magikoopa magics (and sprites they turn into). If the limit is reached, the oldest sprite is despawned.

(Screenshot shows limit of 3)