The website decomp.dev said Thursday that it is shutting down because “the community aspect of decompilation has been broken” by AI, and that projects that once required intense collaboration between people with different skills can now be done trivially with AI. The administrator of the website said that it has become impossible to keep track of which projects are primarily human-led and which ones are done by AI.

“Historically, matching decompilation has been a brutally difficult, time consuming task, on the scale of years for any moderately-sized game with a number of active contributors,” the pseudonymous admin of decomp.dev, who goes by Encounter, wrote on the site.

But recent frontier AI models like GPT-6-Astra have made it trivially easy to decompile a game: “They are significantly better at following complex directions, cross-referencing resources for symbols or debug information, and writing natural code with enough guidance,” Encounter wrote. “It is now clear that, with the right guidance, human input, and code reviews, AI can expedite the decompilation process in a significant way. What is also now clear is that the community aspect of decompilation has been broken.”

AI-powered video game decomps and recomps (recompiling code after modifying it) are everywhere. People have, for example, used AI to put Mario into Elden Ring, port games to platforms they were never designed to work on, or to combine various games in any permutations you could possibly imagine. In recent days, tools specifically designed to decomp games with AI have popped up, such as "decomp.wtf," which promises to "point the AI agent you already use at a game you own. decomp.wtf turns it back into C, one function at a time, and checks every function byte for byte against the original."

Decomp.dev was a collaborative website that hosted file libraries and tools for reverse engineering, re-coding, and decompiling existing video games, meaning taking an existing game and recreating its source code. Decompiling a video game can be done for a variety of reasons and is popular in a few different niches of video game fandom. Speed runners decompile video games to find potential glitches or advantages they can use to beat a game faster; hobbyists decompile video games to port them to new platforms or to emulate them (for example, making Super Mario 64 run natively on PC); modders decompile games so they can more easily modify them; archivists decompile games to recreate code that may be lost; and some people decompile games just for the challenge.

Encounter wrote that the use of AI in the community has sped things up to the point where it has become overwhelming to track human-led projects, and people using AI have taken existing, human-led AI projects and have created “hostile forks” of them, where open-source code written by humans is taken and “finished” by AI: “These kinds of hostile forks put little to no effort into meaningfully contributing to existing projects, tearing apart our community fabric.” Encounter added, “anyone with an AI subscription can manage to create a port or static recompilation that functions at a basic level […] While community members put in the effort to decompile a game, opportunists have frequently raced to release a half-baked, barely-functional port from it.”

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[–] 143 points 1 week ago (36 children)

The fucking AI decomps SUCK too. I can't be the only who who's noticed. Bugs, performance issues, missing features, etc. Sure, technically they work, but it's not a great experience. Every time I see a new decomp posted my very first question is "was it done with AI?", Because if it was, I probably won't bother with it.

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  • [–] 105 points 1 week ago* (8 children)

    AI is great about putting out something like a human half assing whatever it is doing. Looks ok at a glance but there are problems when you look into the details.

    I'm so fucking sick of AI slop.

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  • [–] 27 points 1 week ago (5 children)

    That’s because it’s just gonna be the same level as the average coder, and the average coder is a lazy pos.

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  • [–] 41 points 1 week ago* (last edited 1 week ago) (3 children)

    Please don't take this as a defence of AI, but I saw this with human-led decomp projects too.

    I was pretty active in the Pokemon hacking scene a few years back, and I happen to have a friend who has made a very popular rom hack (not giving names, but if you are interested in those kind of things, you probably played his game), and he told me that he tried to switch from binary hacking to decomp, but the decomp had so many insidious bugs, especially in the battle system, that he much rather keep making hacks with HMA (the currently popular universal hacking tool) rather than deal with that can of worms.

    I also happen to be a huge Ace Combat fan, and the recomp project of AC6 is miles better than what the emulator offered just a year ago. If it wasn't for AI, I would still be forced to use my OG X360 to have anything resembling a good experience on that game. The AI-led recomp is just as good as the game on original hardware, and gives me the chance to play the since-delisted DLCs too.

    I don't think this is as black and white as saying "human-made good, AI-made bad". It's a matter of how much care the person behind the decomp/recomp puts into it, AI or not.

    Which sucks, because I think the best aspect of these projects was the community that would develop around them, the treasure trove of knowledge that someone would gather by working on them, and, as dumb as it sounds, the friends you made along the way. Some of my best friends, I got to know through the Pokemon hacking scene, and it wouldn't have happened if everything was a matter of writing a bunch of prompts on an LLM. The fact that AI made them so easy, and that they are completely indistinguishable from human-led projects (aside from looking at the publication date) is sad. I think that's the worst part of this situation.

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  • [–] 21 points 1 week ago (2 children)

    That's a shame because if AI was used as a tool, it would still have the community helping to make the ports functional.

    Hand created ports also had performance issues, missing features, etc that took years for the community to fix.

    It seems like it's a problem of over hyping the results like what has happened with AI everywhere.

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  • [–] 8 points 1 week ago (1 child)

    I don’t think it’s a problem with overhyping the results. It’s the fact that you can get something with essentially no work. If the LLM just didn’t output anything at all but told you with a voice prompt that couldn’t be transcribed to text you wouldn’t see anyone using it. It’s the fact that it allows people to be lazy and still get output, no matter how bad the output is as long as the thing runs, that is making these chatbots so popular.

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  • [–] 15 points 1 week ago (8 children)

    Couldn't this be mitigated by better attention on the part of the human operator? Like, use the ai to crack it open, then actually go back through and verify that everything actually works?

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  • [–] 20 points 1 week ago (7 children)

    That requires the person to know what they're doing, and using the AI as the tool it is. That's a proper use of generative AI in coding, to speed up a human-driven process with oversight.

    That's not what AI slop is, AI slop is what vibe coders do. They don't know how any of the shit actually works, they just tell the AI to do something, and modify prompting until it gives them something that works. They can't fix the issues because they don't know what was done in the first place.

    The problem is that both use types look identical to anyone not directly involved in the project. Things like Claude don't tell you whether it was used by a vibe coder or a responsible developer, it looks exactly the same.

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  • [–] 8 points 1 week ago*

    It's a massive trend right now and everyone is trying to vibecode their own decomps/ports, often people who have no idea what they're doing.

    There are plenty of AI-assisted ones that are actually good, but they're hard to find amidst the untested slop. It doesn't help that a lot of these self-proclaimed "native PC ports" just turn out to be an emulator packaged with the game.

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  • You might be conflating decomps with ports that use decomps as a base.

    A decompilation means taking a binary and reverse engineering source code that, when compiled, will produce an identical binary targeting the same platform.

    AI has also been ruining decomps, making it a race and a numbers game, rather than focusing on quality and the production of human-readable code and the long-term documentation of how a game functions for long term preservation.

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    [–] 68 points 1 week ago (5 children)

    Wow I kind of expected a better headline from 404. The website makes it clear that it's not about being easy, it's about it being low effort and antisocial.

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  • [–] [S] 8 points 1 week ago (4 children)

    You don't think low-effort and easy can be the same?

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  • [–] 47 points 1 week ago* (25 children)

    Define “too easy” because the last AI decomp I saw was a 600ish megabyte Pokémon game for the DS that cost the guy $56k worth of tokens and was ultimately pointless because the actual source code had leaked ages ago.

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  • [–] 53 points 1 week ago (2 children)

    cost the guy $56k worth of tokens

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  • [–] 8 points 1 week ago (3 children)

    First of all, lol.

    Second of all, decompiling a binary in a clean room setting is not pointless just because leaked source code exists, because the decompilation can legally be used to make projects based on it whereas the leaked source code cannot be touched without facing the wrath of Nintendo lawyers.

    Now, using AI to decompile a binary will likely not produce human-readable code, and will ultimately be pointless for things like studying code, producing high quality ports and mods, etc., but if a human or a group of humans did it, it can be extremely useful.

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    [–] 43 points 1 week ago (5 children)

    People don't use AI as a tool which is the problem. They just ask it to do a job and don't analyze or do anything with the results. It's made people lazier about research. I'm not trusting what a machine decided should be there.

    I once use AI to build a resume for me based off the one I already had and it just made shit up.

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  • [–] 7 points 1 week ago

    Yeah, more people need to be taught that generative AI models are literally auto-correct like on their phones. It is the gigantic, multi-trillion-dollar, ultra high tech, ultra high powered version of auto correct, but that's what it is. Would they trust something important that, sight unseen?

    For those of us who write code, it can be handy to have an auto correct that can suggest chunks of code rather than just the next word or filling in a partially typed variable name. But you have to treat it like a suggestion, and read the suggestion, and make a conscious decision about whether that is how you want it. Giving up your agency is bad, but that is what a huge portion of the population seems to want to do at every turn. Not having to do anything is a nice-sounding option to have, but it's not good for your brain or body.

    But on top of that, as an engineer, you are also losing out on familiarity with the design when you give up that agency. I find that when I let the neural net in my head -- the one made out of actual neurons -- get more exposure to the internal workings of a system, it is better at helping me diagnose problems with our product more quickly and intuitively.

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    [–] 43 points 1 week ago (1 child)
  • [–] 35 points 1 week ago (14 children)

    The loss of skills as this continues to happen is going to be devastating. At least as people moved from machine level coding to higher compilers there were still programming methodology and awareness of how and why things work. One problem with AI in anything is that it's difficult to keep it focused on just one thing, it likes to wander and do other changes too, which for coding will end up changing and breaking stuff and the human has no idea why since it wasn't even assigned.

    We've lived for a while in a consume and trash society where the ability to fix things yourself is gone, and now it's in coding.

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    [–] 31 points 1 week ago

    “Coring out the brain of humanity” is a phrase that comes to my mind more often these days.

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  • [–] 23 points 1 week ago (11 children)

    AI is gonna destroy capitalism and non-capitalism alike. It is agnostic to political alignment.

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    [–] 20 points 1 week ago (4 children)

    Consider this, though;

    Corporations will now be forced to reckon with the fact that IP is meaningless thanks to their new toys. Anything extant is fair game for AI? Buckle the fuck up, then, 'cause that's a very nice everything you have there, and it'd be a shame of somebody AI'd it. Which they will. And it'll either be crowd-sourced like these game de-re-comps, or it'll be the unofficial "rogue agent" breaking all your shit wide open because you also have your own "rogue agents" talking to theirs.

    Legislation will happen sooner this way, and while the damage will undoubtedly have been done to your average creative intellectual in the short term, at least creative intellectuals are capable of adapting to the new. The shackles that will rightfully-but-belatedly be placed on AI once this comes to a head will genuinely cripple many of these companies who went literally ALL FUCKING IN on AI.

    It may yet still be too little too late in terms of a great many things we have so long taken for granted, but take a look at the PS5 leak and Sony's take on ownership alongside all this and tell me that isn't the most hilariously ironic thing that could happen to them.

    All this shit is about to come right back around, and they've all talked themselves into a corner that this is for the good of everyone that it works like it does. Bet, bitches, here comes the slop that is on the surface totally indistinguishable from your actual product that is also now inextricably linked to your brand. Y'all are fucked and have nobody to blame but yourselves.

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  • [–] 11 points 1 week ago

    I could definitely imagine something like GTA6 getting cracked and then half-assedly ported to PS3 by AI. Let the greed and hubris of all the companies who thought they could fire all their talent and corner the market on slopbased IP rehashes for infinite profit at minimal cost fire back on them.

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    [–] 16 points 1 week ago (4 children)

    Decomp.wtf which was referenced as one of the tools has been archived today, because it's author realised it's killing the community. Cats out of the bag now, so not sure how that will help.

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    [–] 10 points 1 week ago

    If anyone is looking for alternatives that are useful it looks like recomp.fyi is doing a good job.

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  • [–] 9 points 1 week ago (7 children)

    This feels like an asshole move. Instead of providing a central location for tracking, encouraging open sourcing and continued development the dude just threw his hands up in the air and said "I give up".

    Like yeah, the AI usage sucks and those versions are buggy as hell but at least it's a start for some games and people can continue the work to improve it.

    But now without easy tracking every script kiddy and vibecoder are just going to assume they are the first and make another project somewhere then repeat the same work that has already been done.

    I get that life happens or people move on from a project but damn dude, let someone else takeover or GTFO of the way.

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  • [–] 14 points 1 week ago

    I get your point, and since this project has only been up for two years it's not too much history being lost.

    However, I also empathize with the perspective of the site maintainer as well. There's a lot more chaff to be separated from the wheat with the deluge of vibecoded submissions. I think keeping a frozen record of the site might be best to provide a point-in-time snapshot of where human-based progress of decompilation has gotten to. Someone else can manage the sifting through the AI slop, because that's not what the maintainer signed up for.

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  • [–] 13 points 1 week ago (3 children)

    It may feel that way, but it's not an asshole move. We are all struggling with mental health and existential dread in the face of what sometimes seems to be a genuine polycrisis that includes an AI apocalypse. Some people deal with this stress more effectively than others, but it doesn't make someone an asshole when they just can't take it anymore and you've gotta expect some people are going to crash out pretty hard. This is a lot milder than how some people are going to inevitably crash out, and this is not going to be the only situation like this.

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    [–] 7 points 1 week ago*

    Honestly, what would be nice is for a community like this to serve as gatekeeper with high standards for decomp projects to meet. Sure 99% won't make it in but who cares?

    I know we're in the Wild West days right now but eventually things will settle. If the foss community can find a way to make torrents organized safe and accessible they can do anything.

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