Show HN: HyperTemplates, a pure-HTML templating system and static site generator (hypertemplates.net)

Think of it as Plex or Jellyfin for your ROM library: it automatically fetches metadata, artwork, and game information from online metadata sources to transform your folders into a browsable collection.

You can play games directly in the browser for consoles like the N64, Game Boy Advance, Nintendo DS, and PlayStation 1, using the integrated web emulator (https://emulatorjs.org/). Members of the community have released integrations for Playnite (Windows), muOS (Anbernic handhelds) and Decky Loader (Steam Deck), with many more in the works.

The team has been working on RomM for just over two years now, and we're incredibly proud of what we've built so far. There's no company behind the project, just a bunch of friends building something together that we've wanted for a long time. And of course, the code is open-source and AGPLv3 licensed.

Check out the (kinda slow) demo running on an ultra-cheap VPS: https://demo.romm.app/

Comments (87)

bogwog · 1d ago

I had an idea once but not the time nor motivation to build it: a database of game design with links to gameplay snippets.

So for example an article on "2D platforming" that discusses the implementation in Super Mario, and includes a "demo" button which launches a web emulator with a save state that demonstrates a specific jumping section of the game.

Legally perilous maybe, although my non-lawyer brain sees that as fair use, especially if the emulator doesn't let you play the full game. Idk, but it'd be a unique thing on the internet.

Edit: this is awesome btw, im definitely setting up a personal instance soon

gassi · 1d ago

Cool idea, would be a fun POC or weekend project. The team behind EmulatorJS (https://emulatorjs.org/) has made it stupid easy to inject the player into a static website (or multiple players with iframes), with a preloaded game and custom settings.

TomatoCo · 23h ago

I think you could make your fair-use defense a lot stronger by stripping the ROM. Shouldn't even be that hard! Only let it run for a few seconds, record all the memory accesses, zero everything that wasn't hit.

Arelius · 1d ago

> Legally perilous maybe, although my non-lawyer brain sees that as fair use, especially if the emulator doesn't let you play the full game. Idk, but it'd be a unique thing on the internet.

IANAL, but I think what a lot of people don't understand is that "fair-use" is a defense. Which basically means you have to be prepared to argue in in court. A lot of potential fair-use is quashed before it gets to that point.

It's also a balancing test, which means that it's very fact/context dependent, and subjective, which results in for a lot of cases, you really won't know until you actually get to court.

gassi · 23h ago

This is incredibly relevant to projects in this space, and we continue to hold discussions about what is and isn't tolerated in our community, and what features we should avoid building, in order to protect ourselves from legal attacks. One thing you'll never see integrated into the RomM is a way to pull/download ROMs from cloud services or website; you'll always need to provide the games to RomM directly, after sourcing them legally of course.

kaunta · 19h ago

This idea was explored by Joël Franušić and Adam Smith:

"Playable Quotes for Game Boy Games" - https://www.youtube.com/watch?v=z9JYOZWLMlo

MyPasswordSucks · 18h ago

The database idea is neat, but I'm not really sure what the web emulator part adds besides bloat. Either an animated .GIF or an HTML5 object with buttons to click to demonstrate, e.g., standing horizontal jump trajectory vs running horizontal jump trajectory would not only be less overhead, but much more immediate.

anthk · 23h ago

MAME/MESS just used GIF files for that.

bane · 1d ago

RomM is a great project! I've so excited to see the integrations coming along.

As somebody who's setup a lot of little retroboxes, the idea of doing it once and having my collection served off of my homelab to all my other devices is incredibly appealing. Web-based emulation has come a very long way. Still I prefer to play off of my individual devices many of which don't have good browser support.

Setting those systems up can take hours each, but being able to point something like a Batocera instance or an ES-DE setup at a server and have it self populate with roms, bios files, screenshots, etc, would be a dream. It sounds like this might be the future of the emulation ecosystem and it sounds amazing!

gassi · 1d ago

I love your vision and enthusiasm! You seem to have a solid setup already and a great use case for a future version of RomM.

oersted · 6h ago

Side note: for those with large PC game libraries, Playnite is a godsend!

It has a similar UX as RomM, in fact it seems to be inspired by Playnite and has a plugin for it. It also uses most of the same metadata sources.

Playnite is quite mature and powerful now, with a rich ecosystem of extensions, data sources and themes. And even though I am not much of an emulator user, it was easy to hook up to any emulator and local ROM, like Breath of the Wild with Cemu or Pokemon Emerald on VBA.

Not to in any way suggest that you should use Playnite instead of RomM, it looks like a great app, just thought it would be relevant to mention.

gassi · 5h ago

I use both, Playnite and RomM are better together!

M95D · 1d ago

Fetching anything from the internet means some cloud knows what games I'm playing. It's a privacy risk. Games played are very revealing to personality type, and probably lots of other individual info, and that means the temptation to gather this data and sell it to advertisers is very high.

gassi · 23h ago

What fortunate timing! Our next release will including a new, local-only "API" that uses Launchbox's GamesDB (https://gamesdb.launchbox-app.com/) as the metadata source. The entire database is loaded into Redis and games are matched on exact file names, so no data is ever sent to any cloud providers.

https://github.com/rommapp/romm/pull/1515

wolrah · 19h ago

> Fetching anything from the internet means some cloud knows what games I'm playing. It's a privacy risk. Games played are very revealing to personality type, and probably lots of other individual info

It seems like OP already replied with an upcoming feature to entirely eliminate your concern, but I would also point out that this doesn't mean the cloud service knows what games you're playing, they just know what games you have which for many gamers are two very different things.

That's especially true for those with a large enough ROM collection to be interested in tools to manage and simplify access to their libraries. I'd be willing to bet that the majority of potential users have collections that are exponentially larger than the list of games they actually play, in many cases some variety of a "complete" collection.

udev4096 · 7h ago

Use a goddamn VPN or Tor if you don't like being profiled. We live in the era of mass surveillance. It is obvious that everyone is being profiled all the time. It's a meta-data aggregating player, how the fuck do you think that works?

doubled112 · 1d ago

It is optional. If you don’t configure the integrations it won’t fetch anything from the internet.

It looks much less impressive without cover art though.

gassi · 23h ago

Even if we could bypass calling the API directly, just fetching, storing or loading images from IGDB or SSFR would "leak" some data in those calls. In theory you could block the container's access to the web, then identify and upload cover art for every game by hand.

1oooqooq · 5h ago

retroarch downloads entire db of assets.

indigodaddy · 5h ago

Tried the first NES game off the demo. Surprisingly playable/enjoyable on mobile (Android chrome)! I feel like even a few years ago that the experience in mobile browser on some random retro game site was not even close to this good? Is emulatorJS pretty new or does this project just have all the pieces working perfectly?

gassi · 5h ago

EmulatorJS.org is a complete, open-source rebuild of the closed-source emulatorjs.com, and has now surpassed the performance and feature set of the original emulator. Their team continues to make strides with the experience on mobile, and we'll make sure to keep RomM updated as new releases come out.

1oooqooq · 5h ago

used on the archive.org rom files for more than a decade.

dawnerd · 1d ago

I'm using it mostly as a way to keep my copies of GOG games organized. I could use GOG's app, but the point of having fully offline copies is to not have them under the control of the people you bought them from.

Romm works really great for this too.

atrus · 1d ago

Thank you for being AGPLv3, and an extra big thank you for clearly laying out the needed directory structure. Sometimes it's not always clear. The docs in general are great!

gassi · 23h ago

Glad to hear it!

roger_ · 1d ago

Been tracking this for a while and it really needs support for renaming and validating ROMs (e.g. with .dat files) to be called a “ROM manager”.

gassi · 1d ago

1000% agree, and we're planning to do just that with Hasheous (https://hasheous.org/), a "free service that matches MD5 or SHA1 hashes of ROMs and digital games with metadata providers". There's a cloud version hosted by the project creator, or you can spin up your own instance and source the .DAT files.

roger_ · 1d ago

Great, looking forward to it!

I’ve used RomCenter and other tools in the past and I’d love to see similar, comprehensive functionality in something more modern.

papercrane · 1d ago

Your comment piqued my interest, as that would be a required feature for me to use something like this.

It looks like they do support integrating with a tool called Igir to handle validating and naming ROMs using DAT files.

https://docs.romm.app/latest/Tools/Igir-Collection-Manager/

gassi · 1d ago

Igir is great! We've been sponsoring them for the last few months since many of our users find it helpful. There are docs on both ends for getting it to output a folder structure that's compatible with the app

https://docs.romm.app/latest/Tools/Igir-Collection-Manager/ | https://igir.io/usage/desktop/romm/#

sumtechguy · 1d ago

Have to dig and see if it handles retool items. Unfortunately retool has been basically abandoned. IGIR looked interesting until I realized it could not do parent/clone for redump like retool.

papercrane · 1d ago

Looks like it does support 1G1R with the --single option and can infer parent/clone information if it's not provided, like with redump DATs. You could also use retool to create a DAT with that information based on your preferences, but as you said that's probably not viable longterm since retool is no longer maintained.

https://igir.io/dats/processing/#parentclone-inference

sumtechguy · 1d ago

Yeah. The base problem is redump doesnt have parent clone. Some of MAME has it, retool has the currently basically static version. The name inference is ok for some of them because they are just basically the same name but diff regions. Others are in the native language or just totally different names but same game. Then there is TOSEC. That is a monster I have been trying to figure out what to do with and has similar problems as redump. No-intro and MAME are pretty good with its relationship metadata. The other two not so much. Some websites have it for particular systems but kinda not a cool move to scrape them. One of the cool parts I liked out of retool was its compilation part where there could be three games and it is in another 'game' thigs like '5 in 1'. Which is where p/c falls apart.

garrettjoecox · 1d ago

Could you explain the benefits of using this over retroarch, lakka.tv, emulator station, EmuDeck (steam deck wrapper around some of these), etc.

Playing through a browser seems like a downside for me personally

zurdi · 1d ago

This is a self-hosted solution, unlike all those sofware you mention. You will install this in your server through docker and you will manage your ROMs library with a clean interface. Being able to play in the webUI itself is an extra since we just integrated emualtorjs (from emulatorjs.org)

garrettjoecox · 1d ago

I think I might just be too far from the target audience to understand this. I don’t see any of the other options as non “self hosted”, they aren’t backed by some cloud infrastructure owned by a company, those are all locally running apps on your device

gassi · 1d ago

Another way to put it is that those apps are only installed on a single device at a time, whereas with RomM setup on a server, so you can access your library from any device with a browser. There's a future where ES-DE and EmuDeck can pull games from, and push saves to, a central RomM server.

zurdi · 23h ago

As Gantoine said, the main difference is that you can't access any of those tools from other device, only from the one where it's installed

gassi · 1d ago

Ideally you would use both, and the community would build integrations that allow, say, EmuDeck to pull games from the server onto your Steam Deck and sync saves back to the server.

I usually play on Windows with Playnite (https://playnite.link/), and the plugin (https://github.com/rommapp/playnite-plugin) allows Playnite to pull and display the list of games for each system, after which I can install the ones I want to play onto my PC.

VonGuard · 1d ago

Been using this for a while. It's evolving rapidly and the team behind it is very responsive and passionate. Very excited to see this evolve over time! The only thing that it really needs going forward is more Retroarch cores ported to JavaScript, but that's an upstream problem.

gassi · 1d ago

We just added support for Doom and Amstract CPC in today's patch release! It's been available upstream for a while now so we just had to enable it. There's also a new update for EmulatorJS coming soon (currectly in beta testing), and I've been thinking of releasing a custom image with the nightly/beta build for testing...

zurdi · 1d ago

Thank you for your kind words! And yeah, the emulation part is more in the emulatorjs team roof, they are doing a great job too

zunk · 1d ago

This might be a stupid question. But can you have a general import folder were you just dump a rom and the app IDs it and moves it to the correct system folder?

I have this installed on my unRAID instance and haven't yet figured this out..

gassi · 1d ago

That's not possible (yet), you can upload a ROM from the web UI (button in the navbar) but you need to select the platform it belongs to. When we implement hash-based matching with Hasheous (https://hasheous.org/) you'll be able to upload a bunch of ROMs, or throw them into an import folder, and the ones that are detected correctly will be moved to the "right" platform folders.

asmor · 1d ago

I use igir for this. It's a bit of work to setup though.

(Pro tip: Use the {datName} template token instead of --dir-dat-name if you use clean with single DAT files, or the "only delete from folders we touched" rule doesn't apply, learned the hard way).

zahlman · 18h ago

My first thought was, what does it mean for a program like this to be "hosted" in the first place?

My second thought was, for people who play a lot of ROMs, they're either doing it because they know more about those games than typical online metadata sources do; and/or a big chunk of them are modded or even completely homebrew.

gassi · 16h ago

Hosted as in self-hosted, as in run on a server with Docker/Proxmox/Unraid and accessible via a web browser, as opposed to running locally on a single device.

The solution isn't ideal for those who hoard entire romsets, but it's great for those of us who curate their collections down to a more manageable size. That can be anywhere from a couple hundred to a couple thousand games, and the metadata sources are fairly robust at that scale.

TOGoS · 18h ago

I assumed it meant that the emulator is written as a ROM that loads itself.

But that's probably not what it means. Kids throw words around meaning all sorts of strange things these days.

gassi · 16h ago

Not sure what you mean by this, but in this context it's hosting and managing applications on your own servers instead of consuming from cloud/SaaS providers.

TOGoS · 4h ago

Back when I was a lad we called that "a computer program"

jfinnery · 1d ago

Any way to run the Docker version without the external DB requirement? I have a bunch of things running on my home server and so far every one is a single image with no external requirements, which is very nice. Everything that needs a DB just uses sqlite, makes it operationally very simple, and nothing I do even comes within the same universe as the kind of usage that'd cause sqlite to become a bottleneck (and this doesn't look like it would, either).

zurdi · 13h ago

Sadly no. We had sqlite support long time ago but it became way too hard to maintain as our database arquitecture grown, so right now we only support mariadb and postgres

jfinnery · 8h ago

Thanks so much for the response! I get it, that’s cool, just making sure. Will be giving it a try regardless.

shitloadofbooks · 20h ago

I made my own really mediocre version of this 2 years ago just for PS4 and Switch ROMS, also using IGDB etc. Glad to see something so polished and professional looking.

For the maintainers, does this pull the metadata (e.g Title ID or PKG ID) from the (supported) ROM files directly, or only from the filename? I skimmed the README and Docs and couldn't find a clear answer.

zurdi · 19h ago

Hi! for some platforms like switch where the games have a Title ID we first try to match against a static file RomM already has loaded and fallback to metadata providers (igdb, screenscraper and mobygames for now) searching by filename

haolez · 1d ago

This would be super cool if it becomes a smart TV app. Couldn't be too far off, right?

gassi · 1d ago

If/when someone builds an Android app we could easily port it to Android TV with some tweaks for controller and remote support. However playing the games gets a bit tricky, as the built-in player might struggle with the low-end hardware used in many consumer smart TVs.

pipes · 1d ago

Looks lovely. Thanks for creating this.

If you have time:

Does it (or can it) run emulators natively? I'm trying to get my head around js emulator, how is that libretro? Is libretro compiled to wasm?

Is it running retro arch underneath or have you managed to implement the libretro API?

I love and hate retroarch. Its menus are ridiculous but it's still easier than managing multiple emulators.

gassi · 1d ago

The project that powers the in-browser emulator is EmulatorJS, which use RetroArch's libretro cores compiled to WASM. More info on the process here: https://emulatorjs.org/docs4devs/buildingraw

I believe it's running RetroArch, as when you load a corrupt file or start without selecting a game it displays the RA menu. If you want to dig deeper you can check out their github or ask in their Discord, the team have been wonderful to work with.

Gamemaster1379 · 23h ago

I get the impression the authors are monitoring the thread. I'm not home to check this out but I like the idea. A few questions.

1. Does the web interface allow you to download your ROMs in a similar fashion to Plex letting you download your files? I could see myself using this to fetch from my libraries and would like a nice GUI box art interface to grab a game I'm looking for. 2. How does this work with ROM hacks? How is the metadata pulled? Filename? Header? How could I set custom metadata where it doesn't match. 3. Does this have an accessible and documented API if I want to build extensions to it (or am I forced to use the interface?)

zurdi · 22h ago

Of course! we are excited about the post and we want to answer any question regarding RomM. Answering you:

1. That's exacty what RomM (among other things) does. You will have a Jellyfin/Plex interface from where download your games 2. Right now we match using the name of the file, but we are planning to add match by hash thaat will increase the accuracy even more. If it doesn't match anything, you are able to match it manually from the interface in a very user friendly way. 3. Yes, our API docs are integrated into RomM itself, so any RomM instance you can access will show the docs. It can be your own instance, or the demo site one for example (https://demo.romm.app/api/docs) or (https://demo.romm.app/api/redoc)

Apart from that, we have some integrations with different systems, like a plugin for playnite or an app for muos or portmaster to avoid download from the browser itself but from a native client (https://docs.romm.app/latest/Integrations/Playnite-plugin/) and (https://docs.romm.app/latest/Integrations/muOS-app/). A lot more integrations are in the works

mingw__ · 1d ago

Seeing the integration with RetroAchievements is especially appreciated!

UI_at_80x24 · 1d ago

I'm not really understanding the usecase here.

Is it MAME but for playing in a browser?

gassi · 1d ago

At it's core it's a system for organizing and displaying your collection of retro games (ROMs). Instead of navigating through folders or manually moving games from a hard drive to whatever system you want to play on, you can load them into RomM, navigate to the app and download them from the browser.

You can share it with your friends so they can access your library, use the plugins to download games directly onto some platforms (without a browser), or play older systems in the browser for a quick session.

At some point we'd like to handle save file sync between devices so you can stop playing on one device and pick up where you left off on another!

mortos · 1d ago

I saw this project some months ago and it looks awesome, just haven't set it up yet.

How does it handle modern games? I have a lot of DRM free games and small indie projects I've collected/archived and I want a way to neatly display them and download them

zurdi · 1d ago

You can display almost anything pretty well. For DRM free games, just upload them as a zip or put them in your library as a folder with everything inside and RomM will display them as everything else. You can do it under the "win" folder so RomM knows those are PC games

mortos · 1d ago

Awesome! I also see RuffleRS is supported too for flash archiving. I'm jumping on this now

bane · 1d ago

Is there anyword on integration with Batocera, ES-DE, or Retroarch? Those mega systems would get supercharged with it. The homelab community would likely catch on very quick.

zurdi · 1d ago

Right now we have a playnite plugin, a muOS/portmaster app and a on-going decky plugin for steam deck. We have plans to integrate with RetroDeck. No luck with Retroarch since it doesn't support plugins, but you can always use something like syncthing for those where we don't have integration yet purpose.

gassi · 1d ago

Not a plan but we wrote this up a while back as an exploration into which systems/platforms we can target. We're really hoping the community continues to step up with more plugins and integrations so we can focus on the core service.

bane · 20h ago

Not thinking about you guys needing to write these integrations, but if there's interest on their sides for building it themselves?

gassi · 1h ago

Depends on the project, the muOS team is keen to integrate RomM directly in a future release, and the Retrodeck team is willing to partner on support.

reactordev · 1d ago

Reminds me of a “steam” inspired version of hyperspin. Cool! Great work. Still looking for a good hyperspin replacement that runs on Linux that I can use for my machines.

gassi · 1d ago

I've been working on integrating RomM into Lutris (https://lutris.net/) for a while, but it's not ready yet since I haven't had time to finish it. Not as a plugin but directly in the main Lutris repo: https://github.com/gantoine/lutris/tree/romm-game-service

It would allow you to store your games on the server, sync the list in Lutris, and install them when you want to play them. I'd like to get a working POC to demo to the Lutris team soon-ish. Oh and if anyone sees this and would like to help get us there, contributions are always welcome!

entropicdrifter · 1d ago

I would love to see this working in Pegasus Frontend or Heroic Games Launcher, personally

gassi · 1d ago

Pegasus can use Lutris as a game source, so if we build the Lutris "plugin" we get Pegasus support for free! https://pegasus-frontend.org/docs/user-guide/meta-sources/

typh00n · 11h ago

killer feature for me at least would be to be able to net-play co-op games via emulatorjs in the browser. :)

No comments yet

johanyc · 1d ago

This is so cool and you can play it directly on the browser

gassi · 23h ago

You can thank the EmulatorJS team for that, they're really killing it: https://github.com/EmulatorJS/EmulatorJS

pdntspa · 1d ago

Can we collectively stop using the word "beautiful" for app descriptions. It is so overused and now effectively meaningless. Besides, beauty is supposed to be in the eye of the beholder, not the creator trying to put words in other peoples' mouths.

If you are aiming for 'beauty' (whatever that actually means), then build it to a high standard and let other people find the words on their own accord.

bityard · 22h ago

Could be worse, it could be "blazing fast!"

gassi · 1d ago

We're building this app for us, our friends and our community, and if we collectively find it beautiful, then it's objectively beautiful. :)

pdntspa · 1d ago

No love for understatement, I see

zurdi · 23h ago

We put a lot of effort in making it responsive and aesthetically beautiful dude! Sorry to sorry to hear that you dislike it

pdntspa · 22h ago

All I'm saying is to not contribute to rendering the word meaningless by putting it in other peoples' mouths. If what you built is truly beautiful then people will call it as such without your prompting.

zurdi · 21h ago

Respectable opinion, but not accurate from my point of view because we could say the same for powerful or any other adjectives!

pdntspa · 15h ago

Yes, they are overused as well. I would love it if people would tone it down with the adjectives.

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Comments (87)