Homebrew tagNX - a WIP to play *some* online third party games on banned switches

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systemdev

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NEVER SIGN INTO AN ACCOUNT YOU CARE ABOUT WITH THESE PATCHES, THEY ARE EASILY DETECTABLE AND I AM NOT RESPONSIBLE FOR ANY ACCOUNT BANS

Hi all, I spent some time working on some patches to let you play some third party online games on banned switches! I call the codebase "tagNX", short for "Together AGain NX". I know a few of these have already been done, but I wanted to include them for the sake of testing the auto update functionality. While I have more patches I want to release, I wanted to get *something* out the door sooner rather than later, as I have a habit of working on things for a while and never releasing them.

Supported Titles (as of 1/19/2025):
- Minecraft
- Minecraft Dungeons
- Fall Guys
- Among Us
- Dauntless
- Crunchyroll
- Hulu
- Youtube

To use any of these patches:
- Install the LATEST version of the game
- Extract the zip file to the root of the SD card
- Run the game normally, and follow the onscreen prompts to sign in if there are any

While not perfect, I have tried to make these patches somewhat self updating by using symbol lookups where possible and signature scanning where there aren't any symbols. Barring any major functionality changes, the Youtube, Crunchyroll, and Hulu patches shouldn't need to be updated, while the games are on a bit shakier ground.

Source code is attached to the post (tagNX-Source-v1.zip), feel free to update patches if they break or port tagNX to new titles, just make sure to share your changes with the world! Minecraft Dungeons is using an older, even more WIP version of tagNX, and the source won't be included until I get around to porting it to the newer, less embarrassing, codebase.

A Massive Thanks To:
@Lumince - For figuring out NPDM stuff
Everyone in the Fortnite Switch Modding Discord - For testing, refactoring, and hyping me up.
 

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This is so cool! Are there plans for a tagnx manager to be released as homebrew in the future?
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I tried to run it on Minecraft, but an error occurred and it would not start. The Minecraft version is 1.21.51 and the system version is 18.1.0.
 
Last edited by HoRy205,
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This is so cool! Are there plans for a tagnx manager to be released as homebrew in the future?
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I tried to run it on Minecraft, but an error occurred and it would not start. The Minecraft version is 1.21.51 and the system version is 18.1.0.
yeah minecraft seems to have some issues rn, hopefully the dev can fix it soon!
 
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This is so cool! Are there plans for a tagnx manager to be released as homebrew in the future?
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I tried to run it on Minecraft, but an error occurred and it would not start. The Minecraft version is 1.21.51 and the system version is 18.1.0.
Minecraft has been (hopefully) fixed! Edited main post, but also attaching here!

Also for the tagnx manager - If people want it I can make that happen!
 

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This is so cool! Are there plans for a tagnx manager to be released as homebrew in the future?
Post automatically merged:

I tried to run it on Minecraft, but an error occurred and it would not start. The Minecraft version is 1.21.51 and the system version is 18.1.0.
~Snip Not my mess up xD
 
Last edited by Lumince,
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Would you be able to patch the jackbox games? A tinfoil shop used to release their own versions of the patched jackbox games but they shut down and I haven't been able to find them since.
I have the game patches for the ones that updated uploaded here
https://github.com/Lumince/online-patch
Though, patched nsps do exist out there. Just have to look ig
 
Among Us and Fall Guys have a popup saying to sign into your Epic Games account, pressing ok just reloads the same message
 
Is it correct that tagnx will only support crossplay games going forward? Also, this is really cool, it solves one of the reasons for sd booting lineage.
 
Is it correct that tagnx will only support crossplay games going forward? Also, this is really cool, it solves one of the reasons for sd booting lineage.
Correct on the crossplay games bit, tagNX essentially intercepts login requests and modifies them so it looks like they're coming from another platform.
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nice job!
is it game version sensitive or does it work on any version?
Depends on which patch you're talking about. Generally the simpler the patch, the less the chance it will break on an update. I haven't hardcoded offsets for any of these, so they should at least have a chance of working on an updated version. The reason I say to be on the latest is cuz 99% of MP games only work on latest.
 
Last edited by systemdev,

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