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inZOI ModKit AMA Announcement

Hello, Creators.


We’ve prepared an AMA (Ask Me Anything) to discuss the inZOI ModKit in greater depth and address your questions about modding.


To ensure accurate and professional answers, this AMA will be held in written format. We will do our best to respond to the questions you submit.
Please refer to the schedule and submission method below.

◆ ModKit AMA Schedule
 ◽️ Question Submission Period
  - May 29, 2025, 06:00 UTC ~ June 1, 2025, 00:00 UTC
 ◽️ How to Submit Questions
  - Submit your questions via the Google Form linked in this announcement.
  - https://inzoi.me/AMA_ModKit
 ◽️ Answer Release Date & Method
  - Responses to frequently asked and notable questions will be shared on Discord, Steam, and the official website at 08:00 UTC on June 9, 2025.

◆ ModKit AMA Submission Guidelines
 ◽️ Question Categories
  - ModKit Feature Inquiries
  - Mod Item Suggestions
  - Community Guidelines
  - Future Support for Mod Creators
  - Language & Accessibility
  - Other

 ◽️ To help us provide better answers, we kindly ask that you avoid the following types of questions:
  - Extremely vague questions (questions lacking specificity may be difficult to answer)
  - Questions containing inappropriate or offensive language
  - Questions that violate inZOI's modding policy

You can also check out our modding policy at the link below.
https://playinzoi.com/clause/mods_policy

We look forward to your interest and thoughtful questions!

Thank you,
The inZOI Team

Kjun’s Letter: Update Schedule Change and ModKit Notice

Hello, Creators.

Kjun here.

Today, I’d like to explain how your valuable feedback is being reflected in the game and also share an update regarding the schedule change for the update initially planned for May.

[h3]1. Player Feedback Channels[/h3]
Your feedback is always our most important starting point.
We review feedback and bug reports submitted through channels like Discord, Steam, and customer support (CS) on a daily basis. We don't just collect opinions — we also examine the context of the feedback and how many players have had similar experiences.
Although we cannot implement every suggestion immediately, we prioritize them based on frequency and impact. For bugs, we assess whether the issue is unresolvable by the player or whether it frequently disrupts immersion. We will continue to clarify this prioritization process and improve how we communicate with you around how feedback is reflected in the game.

[h3]2. Update Delay and Additional Modding Details[/h3]
We sincerely apologize to those who were waiting for the May update.
The update that was originally planned for the end of May, including the modding system, has been postponed to mid-June. We felt there were still areas that needed improvement, and we wanted to prioritize quality over speed. Although the schedule has shifted, we are working to deliver content that’s truly satisfying.

There have also been some misconceptions circulating about the ModKit since we shared early details. We’ve spent a long time internally exploring the best structure to support modding, and based on your feedback, we realized we needed to explain it more clearly.

The ModKit is a tool designed to help you create mods. Its purpose is to make it easier to create mod content and allow for more flexible sharing.
While inZOI includes a built-in CurseForge integration, we’ve broadened support so that creators can share mods in two ways:
 1. You can upload your mod to CurseForge and install it through the in-game Mod Browser.
 2. Or, you can save the mod locally and move it to the Documents\inZOI\Mods folder to use it manually.
This system aims to support creative freedom and expression, not just mod sharing.
We believe inZOI is only complete when enhanced by the creativity of each individual creator. Our goal is to provide an open and supportive environment for everyone to bring their worlds to life.

The June update will include the following modding features:
 ◽️ A convenient tool to edit or replace graphics for set outfits and furniture
 ◽️ Developer-accessible JSON files to customize game settings and logic
 ◽️ Sample projects that demonstrate how to create clothing, hairstyles, furniture, and interactions

For beginners, we’re also offering the CAZ Wizard tool specifically for set outfit modding. This helps new modders get started more easily.
While data-based modding is possible for all outfit types beyond sets, we are preparing a separate tutorial guide due to its structural complexity. We plan to continue expanding support so creators of all skill levels can participate.
Some features — including scripting — won’t be available at the initial ModKit launch, as development is still ongoing.
We ask for your understanding and promise to deliver a high-quality ModKit as soon as possible.

[h3]3. Game Content Improvements[/h3]
Alongside modding, we are also working to improve how Zois express emotions and show personality in the June update.
During our work on emotional stability in the April update, we discovered some unexpected side effects. Currently, some Zois freeze or fail to reflect emotions through facial expressions or behaviors — this will be addressed in June.
We also heard feedback that Zois sometimes lack distinctiveness in their behavior. We’re adding emotion-based conversations and reactions, so that even the same actions vary depending on emotional state.

For example, a sad Zoi might 'cry in the bathroom.' Certain interactions may be more or less likely depending on mood, and even eating may differ based on emotions or needs.
This is just the beginning. We want Zois to develop unique personalities over time, and respond more naturally based on their emotional state.
We are committed to evolving this system long-term.
We can’t wait to see what kind of worlds you create with inZOI. We truly support and celebrate your imagination. To everyone who’s been waiting for the May update — thank you, and we’ll be back with the June update very soon.


Thank you.
- Kjun

Notice on the Use of Generative AI in inZOI

Hello, Creators.


Recently, there has been growing interest and various discussions in the community regarding the use of generative AI technologies used in inZOI. To provide clear and accurate information, we would like to share the following details.

[Text to Image (T2I) Technology]
The Text to Image (T2I) technology applied in inZOI was trained using publicly available images that are permitted for commercial use.
Over the course of several months, we built our own dataset by selecting 20 million images from public images released under Creative Commons licenses permitting commercial use and modification.
In this process, we referred to MOSAICML’s Common Canvas methodology and applied additional filtering standards to enhance reliability.
For model training we used open-source AI architectures licensed for commercial use.

[3D Printing AI Technology]
Our 3D printing AI technology was trained on approximately 46,000 high-quality 3D models either owned by us or sourced from datasets that are also permitted for commercial use.
This enables users to automatically generate blueprints for in-game 3D printing.

[Video-to-Motion Technology]
The Video-to-Motion(V2M) system was trained primarily on over 1.7 million motion data samples owned and collected by us supplemented with a limited number of publicly available datasets released under open licenses.
As a result, the V2M system enables characters to naturally perform human-like movements such as walking, greeting others, and dancing.

[Our Development Principles]
As we developed and applied generative AI technologies, we generally employed the following principles:
  • Use of open-source technologies licensed for commercial use
  • Use of carefully selected datasets permitted for commercial use
  • Operation of a robust reporting and review system to address any potential claims swiftly and responsibly


We wanted to share this for transparency, as part of our effort to deliver technologies that creators trust.


Thank you,
The inZOI Team

Kjun's Letter: Upcoming Updates

Hello, Creators.
Kjun here.


In this letter, I'll be sharing our plans for features currently in development, as well as the direction we want to take inZOI in the future.


Our team has spent the past month carefully reviewing and addressing frequently reported issues, including build stability, awkward emotional expressions, and a lack of depth in the Karma system. This experience has helped us once again realize how important convincing emotions and behavior is for a life simulation game. Thankfully, some players have responded positively to these fixes by expressing that emotions and conversations now feel more natural, which we truly appreciate. That said, there's still plenty of room for improvement, so we remain committed to making inZOI a better experience for players.


In addition to our ongoing hotfixes, we're actively working on the May and August updates. The May update will introduce long-awaited modding features to the game. While these features won't support creating entirely new systems from scratch at launch, they will allow you to modify key in-game data and settings. We're also preparing official plug-ins for Blender and Maya to make creating custom outfits and furniture easier, as well as features that allow players to work with various asset types such as textures, meshes, FX, and MetaSounds. Guidelines for creating assets will be shared via tutorial videos and the modding UI. We plan on continuing to expand modding support and aim to have all core features in place by December.


With a third city coming to the game, we're also exploring new challenges. We've recognized the community's desire for more gameplay depth and we will work towards offering content with the potential for richer storytelling and more engaging experiences. To match the vibe of the new city, we will be introducing smaller vehicles, such as motorcycles, along with highly requested vehicle personalization features. Since these will build upon our existing vehicle systems, some animations may seem slightly awkward at first. However, we believe that this will allow players to experience the thrill of weaving through the city on a smaller ride, enhancing both the storytelling and atmosphere aspects. We will continue to put our best effort into developing something that feels truly worthwhile.


While we made some adjustments to the Karma system in the previous hotfix, we will continue to refine and expand on it. To address the lack of meaningful consequences, we're currently planning new crime-related content that allows Zois to be caught and go to jail, spawning additional events as a result. Our goal is to create deeper gameplay experiences where Karma-based interactions lead to logical, connected outcomes. If you have any fun or creative ideas, let us know in the #inzoi-feedback channel on our Discord!


Finally, we've noticed growing interest and discussion within our community surrounding inZOI's use of AI. We will be addressing this topic in a separate announcement, and will continue to prioritize transparency and trust to allow players to continue enjoying inZOI.


While inZOI is far from perfect, we are working day and night to make it a true life simulation game through imagination, consideration, and experimentation. Every piece of feedback from each of our players helps point us in the right direction. We will continue listening closely to our community, so please don't hesitate to share your thoughts with us.


Last but not least, I'd like to express my heartfelt appreciation for your continued support.


Thank you.
- Kjun

inZOI ModKit Announcement and Modding Roadmap (Updated)

[p]Hello, Creators.

We're excited to announce that the long-awaited inZOI ModKit will be released in May 2025, along with the game's first modding update!

Please check the information below for more details on the ModKit as well as modding-related features planned for future updates.

[/p][h2]1. inZOI ModKit Release[/h2][p]
The inZOI ModKit is an official tool created to make modding inZOI simple and accessible for everyone. It will be available for download on the Epic Games Store after the May update, and will include the following features.

◆ Downloadable assets

- Mesh files (.fbx) and JSON data files for set outfits and furniture will be made available after the May update, and support for additional assets will be added in future updates.

- By editing JSON files used in the game, players will be able to freely adjust in-game states and conditions.

 - ex. Craft beds that fill the Sleep gauge in 5 minutes.

 - ex. Modify romantic conversations to make Zois feel Aflutter for 10 hours.

◆ Plug-ins for Maya and Blender

- Official plugins for Maya and Blender will be provided to make creating 3D assets for inZOI easier.

- These plugins will allow you to conveniently import downloaded mesh files for your projects.

◆ Modding with Unreal Engine

- Meshes or JSON files created using Maya or Blender can be imported with the ModKit to create modding projects in the form of Unreal Plugins.

◆ CurseForge compatibility

- Created mods can be uploaded to CurseForge for packaging.

- An in-game interface that allows Creators to search and download uploaded mods will be added in the future.

[/p][h2]2. Modding Roadmap[/h2][p]
To expand inZOI's modding ecosystem one step at a time, we've prepared a modding roadmap for 2025. We will build upon core features with each update while continuing to make improvements based on your feedback.[/p][p]
◆ May Update

The May update will introduce quality-of-life features related to modding, as well as a data editor to make editing game data easier. In addition to this, the inZOI ModKit will also be officially released.

◆ October Update[/p][p]The October update will introduce modding features for character appearances and buildings. Support for interaction-based mods will also be added, allowing players to create mods for scripted conversations, voices, rewards, and character animations.

◆ December Update

The December update will allow most outfits to be modded and introduce features for script editing and localization. We hope this will help create an environment where Creators can freely produce content with greater depth and variety.

[/p][h2]3. Other Information[/h2][p]
inZOI's Modifications Policy will be published on our official website in mid-May 2025. It will include key guidelines on creating and using mods, as well as important details on restrictions, ownership, and monetization for mods.

We will continue to listen to your feedback and work towards creating a better modding environment for inZOI. As part of this commitment, we will be hosting an Ask Me Anything (AMA) session focused on modding and opening a dedicated feedback channel. Further details will be announced in May via a separate post.

Please look forward to the future of modding in inZOI!

Thank you,
The inZOI Team
[/p]