We have lots of talented hackers! Lots of folks skilled at assembly hacking, map editing, music composing, sprite drawing, script writing, and more. However, we're all often plagued by a common problem: We get too ambitious and don't finish things!

In April of 2025, we ran a Jank Jam where we challenged ourselves to start a brand new romhack and finish it within a week. We were encouraged to not focus on details and polish and to simply make a thing and finish it. And it turned out fantastic! Without the pressures of making everything perfect, it was liberating and everyone who contributed put together some amazing stuff. Ranging from brand new original stories, to advanced tech demos, to creative new ways to play the base game, everything here is very worth checking out!

Here is the original Forum thread where the jam was originally ran, if you'd like to read through. Presented below is everyone's hacks to download!

You are EVIL Grandma! Will you go on a murderous rampage, or will you be merciful? You'll be judged for what you do... Try to get all the endings, if you're a horrible enough person!

Had a blast making this. It’s like a 30 min hack I hope yall like

You've received an invitation to a party by a mysterious "Mr. P"... Can you figure out his puzzles?

More of a proof of concept than anything I guess, it was really rushed and kinda unfinished compared to what I had planned, hopefully you still like some part of it

by the way I'm aware these images are broken, I accidentally uploaded the wrong ones and when I tried to delete them it... didn't work? I think this site takes a bit to recache and actually clear up those urls so in the meantime I'm just waiting for that to happen before I upload them again lmao.

It's Easter, and you're a cute little rabbit on an Easter Egg hunt. Find them all, and make new friends along the way!

This hack is very light-hearted and you should just take your time playing it. There isn’t a WHOLE lot to do. Just vibes and a couple secrets. Can you figure out the lore?

Credits: "She Wrote a Song For You" by SomeBoyWhoMusics and converted to EB’s song data by livvy94.

This hack keeps the story and everything completely unchanged... but lets you play through it in a totally different way! Featuring brand new, wholly rewritten collision and physics, have fun sliding, jumping, and wall climbing your way through EarthBound with gravity that always pulls you down!

Huge thanks to JTolmar for that WIP player movement rewrite which I based this work from.

PSA: Don’t press directions during cutscenes please! Things can break

This is a hack that splits the game up into 1-2 hour chunks for speedrunning, whether to race against friends, challenge yourself, or just skip to your favorite part.

• Boogey% – just gives an extra “You won!” when you get the fly honey. Just like the popular speedrun category!
• Shroom% – starts you off after the zombie paper cutscene, and gives a “You won!” when you get Rainy Circle.
• Dog% – starts you off after crashing in Summers, and gives you a “You won!” when you get Fire Springs.
• Giygas% – starts you off in Magicant.
• Full Game – just the normal game. Actually this one is slightly bugged, and Magicant won’t trigger if you do Fire Springs last. I don’t know why you’d play this version
• Dodging Practice – skips all the dialog and all the fighting, just gives you a selection of the game’s more enemy-infested areas, and instantly kills you if you get in a fight. Green swirls are safe. Checkpoints abound. But you’d better know how to despawn and stutter step!
• If you’re just here for amusing asm hacks, do Dodging Practice.

What’s this? Valentine’s Day in April? Taking place about 3-4 months after Giygas’s fall... It’s Valentine’s Day. But then... tragedy strikes! Escargo Express hasn't delivered anyone’s mail! Including Ness’s Valentine’s Day card for Paula! In order to save the day, Ness recruits Jeff and the two set out to get to the bottom of this conundrum.

• Romance (duh)
• Mail delivered at a snail’s pace
• Crowd-busting action!
• Mysteries abound in Fourside and Summers
• Jank
• More jank

Ever wonder what Picky gets up to? I sure do! This hack takes place shortly after the events of EarthBound. Pokey is missing, and the people of Onett couldn't seem to care less. But for a certain lonely young boy, everything just seems to remind him of the brother he might never see again. Join Picky and Tracy for an evening in their hometown, talk to everyone you see, and even stop the new local gang! Just be sure to remember that the truest friends you have are always there for you!

Eric has been secretly working on his hack for the Jank Jam months early, but just when he's about to submit it, disaster strikes! Recruit his friend Gualm and head to Best Buy to get a new computer, and try not to die along the way! Features two original MSU-1 songs by Mae!

WARNING this hack is full of extremely aggressive early 2000's style writing that would make edgy teens back then salivate. Get ready for constant explosions and swearing!

Coop hasn't given me a description to stick in here yet! But yeah you play as Ness, don your special running shoes, and deliver pizza! If you're fast enough you'll get some neat tips from your customers... but don't take too long, they won't be happy!