Important: Security Incident

Hello everyone! I was informed of a data breach affecting our service for error collection Sentry, which you could have opted in when using SkyTemple.

Sentry had a data breach affecting 15 customers, unfortunately we are one of them. Stack Traces (technical error information) for one issue was publicly accessible for a short time. I checked this issue and currently am pretty confident that it contains no personal information, however I still wanted to let you all know. More information can be found in the PDF.

We are currently in contact with the Sentry team and will do a further analysis of the breached data. If there is sensitive information in there, we will let you know ASAP.

New Release: SkyTemple Randomizer 2.0.0

Download for Windows & macOS or Linux (Changelog).

Version 2 of the SkyTemple Randomizer is now out! This release brings a completely redesigned and localized UI that should make it much easier to use the Randomizer! The new UI also works great on smaller screens.

Download for Windows & macOS or Linux (Changelog).

The new update brings two new optional modes:

  • "Blind Items": In this mode, all item names are replaced with random names from a list. This list by default contains some randomly generated item names, original item names from the game and item names from other Mystery Dungeon games. The descriptions of all items are replaced with "???" and all items have random icons and shop costs.
  • "Blind Moves": In this mode move names are pulled from a list of random names and descriptions are replaced with "???".

Good luck with these!

There have also been great improvements to the text replacement algorithm (optional, enabled by default).

SkyTemple Randomizer 2.0 main view

SkyTemple Randomizer - 2.0.0
SkyTemple shared 3 months ago

New Pre-Release: SkyTemple Randomizer 2.0.0b1


The first beta for SkyTemple Randomizer 2 is here!

SkyTemple Randomizer 2.0 main view

This new release of the Randomizer comes with a fully redesigned UI using GTK 4 and Adwaita. It's also localized into multiple languages.

If you want to help by giving it a try or want to read the full changelog, head over to the download page.

Thanks for your support and to all contributors on this version!

SkyTemple Randomizer - 2.0.0b1

The upcoming SkyTemple Randomizer 2.0 release will feature a fully new UI! But also some new features, one of which are the "Blind Items" and "Blind Moves" modes:

New Release: SkyTemple 1.6.5

Heyo! We released a new SkyTemple update that mostly fixes some issues introduced in SkyTemple 1.6.5.

Find more information and download links on our downloads page.

SkyTemple - 1.6.5

Soon the next SkyTemple Community Hack Jam starts!

The Sixth SkyTemple Hack Jam is about to be a reality! Everyone will have the opportunity to create and submit hacks under a specified Topic and Gimmick in just three weeks! You can work solo or as part of a team!

This jam will last from March 24 16.00 UTC to April April 14 17.00 UTC! We will reveal this jam's Topic and Gimmick on the starting date via YouTube Premiere!

For more information see our Discord server ( and the YouTube Premiere video (

The SkyTemple community has gathered for this year's "SkyTemple Direct" - Find out about new and upcoming PMD ROM Hacks that are currently in development:

New Release: SkyTemple 1.6.3

Heyo! We released a new SkyTemple update that mostly fixes some issues introduced in SkyTemple 1.6.2.

Find more information and download links on our downloads page.

SkyTemple - 1.6.3

New Release: SkyTemple 1.6.2

Hey everyone!

A new SkyTemple version is now available. It fixes some issues with SkyTemple 1.6.0 and brings general improvements.

Find more information and download links on our downloads page.

SkyTemple - 1.6.2

The SkyTemple websites may be unavailable for some time today, as we upgrade the servers. Sorry about that!

New Releases: SkyTemple 1.6.0 & Randomizer 1.6.0

Hi everyone!

It's finally time: SkyTemple 1.6 and Randomizer 1.6 have been released!

These releases contain a lot of things, like a new (much-faster) emulator integration, mass export for Pokémon, im-/export for scenes, new patches, a plugin system, and support for the Japanese ROMs.

You can see the full changelogs and downloads here:

SkyTemple - 1.6.0

I made a GitHub repository to change the banner that is shown in SkyTemple and SkyTemple Randomizer. If you are part of the PMDCollab or SkyTemple community teams, feel free to open a PR there to promote things!


SkyTemple shared 9 months ago

New Pre-Releases: SkyTemple 1.6.0rc1 & Randomizer 1.6.0rc1

Hey! This time I'll keep it short. It's time for another pre-release of SkyTemple. This time the Release Candidate for 1.6.0.

The big new feature this time is the support for the Japanese ROM. A pre-release is also available for the Randomizer:

Please let us know if you experience any issues! For more info about features in 1.6.0 you can see the changelog on the download page and previous posts on our blog.

SkyTemple - 1.6.0rc1

New Pre-Release: SkyTemple 1.6.0b1

Hey hello!

It's time for another SkyTemple 1.6 pre-release. This time I present you the first beta release.

SkyTemple 1.6.0b1

Last time I said that there were probably no more bigger features being added, but turns out that isn't true!


SkyTemple now has a plugin system! It was technically already possible to install plugins before with the development version, but now the release version of SkyTemple supports loading plugins as well. You can find more information in our wiki.

Plugin developers will find a guide for writing plugins and an example plugin. Please take this example plugin as reference for extending the UI of SkyTemple, as 1.6.0b1 also changes how the UI is extended from modules, rendering the old mechanisms deprecated. The example plugin already uses the new mechanism, while the majority of bundled module still use the old mechanism. See below for more information.

Preperations for GTK 4

SkyTemple is using a UI toolkit named GTK for its interface. A few years ago GTK 4 released and SkyTemple is still on GTK 3.

GTK 4 is a major release that has greater backwards incompatibilities with GTK 3, but it also has some powerful new features which will improvde the usability of SkyTemple greatly.

As a prepreation some internal changes were made to how the UI is constructed. We require your help to test this release since these changes were pretty intrusive and could potentially break in subtle ways. However we already did some testing and so far everything seems fine, but please report any issues you come across.

Some technical details (feel free to skip):

Previously SkyTemple modules directly modified the tree of items on the left side of the UI (the one where you select what you want to edit). This was directly done through the Gtk.ListStore model of the Gtk.TreeView. TreeView has been deprecated in GTK 4 and been replaced by more modern widgets. In order to prepare for this modules now instead an abstracted API to add views to the UI.

Additionally modules previously added classes of type AbstractController to the tree. This was quite bulky and used Gtk.Builder manually to render UI scenes instead of taking advantages of features like Gtk.Template. This has now been deprecated and modules should directly add subclasses of Gtk.Widget. Those should preferably been initialized using Gtk.Template. The only method still works but is expected to be removed with SkyTemple 2.0, which will finalize the GTK 4 migration. At the moment we are slowly migrating every controller to a widget.

Plugin authors should make sure to only use widgets present in GTK 4 to prepare for the change and to directly add Gtk.Widgets to the UI tree.

As a sneak peak, here's an early preview of the UI of the Randomizer running GTK 4. The Randomizer will get its GTK 4 upgrade first.

Preview of SkyTemple Randomizers new UI

GTK 4 and especially the extension "Libadwaita" that SkyTemple and the Randomizer will use support adaptive/responsive window sizes, which will solve a lot of the current window siziing issues SkyTemple and the Randomizer currently use.

JP Support

Adex, Laioxy and others have taken great steps to get more support for the japanese ROM. We now have all symbols needed and Adex is working on getting the patches working. Hopefully we will be able to support the japanese ROM in the next release.

Additionally Laioxy and a few others have started translating the UI of SkyTemple to japanese and japanese can now be selected as language.

Thanks everyone!

Download and Changelog

You can find the changelog and downloads on our downloads page.

The Future

This is now probably really the last features added to the 1.6. release. The only things that I expect to be added is support for the japanese ROM and the buttons to get help from the wiki I mentioned last time. Those things should be in the release candidate, which will likely be the next and final pre-release.

Thanks everyone for making this pre-release possible, especially Adex and Laioxy who have been working hard for getting support for the japenese ROM in the next release!


New Pre-Release: SkyTemple 1.6.0a4

Hi everyone!

Before I share today's pre-release, there are two things I want to remind about, in case you missed them:

  • We have a wiki now! We still need help from people to actually fill it with content, but some pagres are already there. Thank you everyone that is contributing!
  • Yesterday I posted an update on the current state of support for the japanese ROM and what's needed to get it done. You can read that here.

But now let's talk about today's pre-release

SkyTemple 1.6.0a4

This is probably going to be the last alpha pre-release and currently I expect this to be the last release with bigger changes, although you'll come to see that this time the big changes are mostly under the hood.

Dungeon Graphics & Backgrounds: Rust Implementation

SkyTemple is originally written in Python. While Python is a pretty simple and powerful language, it's also pretty slow, due to be interpreted.

Back in SkyTemple 1.4.0 we introduced the concept of "Native File Handlers", which since are enabled by default (but can be disabled in the settings). When enabled SkyTemple uses a alternative implementations for the code that actually manipulates the files in the ROM, written in Rust, a fast compiled programming language.

In SkyTemple 1.4.0 we introduced Rust for dungeon data, map backgrounds, move data, item data, Pokémon data and other small things. This update now also adds implementations for dungeon tilesets, dungeon backgrounds and general backgrounds.

Since it's a new implementation, it might be a little buggy at first. We tested it, but we didn't test every single edge case. So please give it a try and let us know if you run into any issues! If everything works, you should not notice a difference to before, except for editing dungeon graphics and general backgrounds to be a little bit faster, especially when im- and exporting.

FixMemorySoftlock Update

End has updated the FixMemorySoftlock. While this is going to be mostly useful for the upcoming update of the Randomizer, this can also be useful in your own ROMs, as sort of a fail-safe:

Updates the FixMemorySoftlock patch to a new version. The patch will now prevent crashes caused by the game running out of memory by replacing the sprite that can't be loaded with a default preloaded sprite. This should fix all the cutscene crashes caused by memory errors.

Preperations for JP Support

We have updated pmdsky-debug to version v0.7.0+a0aa596e1c which contains a lot of symbols for the japanese ROM of the game, thanks to Laioxy. This brings us a bit closer to supporting the japanese ROM! With your help, maybe we could get JP support ready for version 1.6.0, but there's still a lot to be done, see our previous blog post.

Download and Changelog

You can find the changelog and downloads on our downloads page.

What's ahead?

Thanks everyone for your support and for testing this new pre-release!

For 1.6.0 I at least still want to get the wiki ready so that we can add buttons to the UI that will bring you to a help page in the wiki, based on what page you are on.

There's also a GitHub project for all issues I can fesiably see in 1.6.0. As you can see there are quite a bit of features on there, especially related to hardcoded data tables that aren't editable yet. I don't plan to work on any of these for 1.6.0 yet though. So if you want, why not grab the code and add these yourself? Please comment the GitHub issue if you give it a shot, so we don't accidentally end up working on issues at the same time. Even if you are just trying but ultimatively don't end up finishing it, I invite you to give developing for SkyTemple a try and I'm always happy to lend support, just ask on the GitHub issues.

That's all for today! Until next time!


SkyTemple - 1.6.0a4

Japanese ROM support for SkyTemple - the current state (SkyTempleの日本語ROMサポート - 現状)



This is an update post about the current situation with SkyTemple's support for japanese (JP) ROMs.

Currently SkyTemple does not support japanese ROMS. There are a few things needed for that, that I will outline below.

Function and Data Symbols

SkyTemple mods memory locations inside of the ROM files (so called "symbols"). The location of these symbols is different for each version of the ROM. We already have all symbols SkyTemple needs for the EU and NA ROMs but not for the japenese ROMs.

The user Laioxy recently contributed a lot of symbols for JP to pmdsky-debug. SkyTemple uses pmdsky-debug for looking up most symbols.

We need your help to get the rest of the symbols filled! I updated the GitHub issue where we document what symbols are still missing.

ASM Patches

SkyTemple is bundled with a lot of ASM patches. Many of them are needed to modify basic functionality of the ROM, such as the Actor List.

I have created a GitHub issue that lists all patches we at least need to get the Randomizer fully working. Having these patches will also allow for most functionality inside of SkyTemple. Without some of these patches even basic editing functionality would be very limited in SkyTemple.

Text Strings

The ROMs contain files with a lot of text that the game references. This file is just a long list of text strings. The exact order and number of text strings is different between versions. SkyTemple needs to categorize these strings into different sections to be able to display and edit things like Pokémon names. Thankfully the user Darkaim has already contributed a categorization, but you can also find and double-check that here.

UI Localization

Lastly it would also be great to have the SkyTemple UI itself be translated to Japenese. While this isn't strictly neccesary to mod japenese ROMS, this would make it easier for japenese speakers to use SkyTemple.

If you want to help, you can find the translation project here:

What now?

In summary I would really like for SkyTemple to support Japanese ROMs, but I need your help, especially if you speak Japanese and are able to read and research the missing bits. You can contribute via GitHub, ask questions by replying to this post or contact our community Discord server.

New Release: SkyTemple 1.5.5


A new bugfix release of SkyTemple has been released: 1.5.5. Download here.

This release fixes some minor annoying bugs and properly marks the Japanese version of the game as unsupported. If you want, we could use your help getting the Japanese ROM supported.

We also have a wiki now! We are still working on writing content for it. You can help too if you want!

Also I'm very excited to learn, that there is now a decompilation project for the game.

Hi! We have a wiki now: - It's still empty and I very much need your help to fill it! If you want to help fill it, head over to the project organization discussion (!