September 10, 2026 Update
Fixed compatibility issues with existing mods.
An all-in-one toolkit for card game development. Visually design, test, and deploy your game with smart templates and live previews. No code needed—turn your ideas into playable trading card games, quickly and solo.
| App ID | 4086590 |
|---|---|
| App type | Game |
| Developer | Institute of Card Game Studies |
| Publisher | Institute of Card Game Studies |
| Release date | 14 August 2026 · Early Access |
| Release state | released |
| Localized names | english Boss Key |
| Store page | store.steampowered.com/app/4086590 |
| Last store refresh | 6 hours ago |
| # | Executable | Arguments | OS | Description |
|---|---|---|---|---|
| 0 | Boss Key.exe | windows |
Hourly peaks, UTC. All-time peak covers SteamRaw's recorded history.
All Steam store regions, converted to USD at today's exchange rate, compared with the US price. Lowest is the lowest price SteamRaw has recorded for that region.
Loading regional prices…
| Date | Price | Regular | Discount |
|---|---|---|---|
| 12 September 2026 02:45 UTC | $9.99 | $9.99 |
| DLC | AppID | Release | Price |
|---|---|---|---|
| No DLC known for this app. | |||
| Branch | Build ID | Description | Updated | Password |
|---|---|---|---|---|
| public | 25269261 | 12 September 2026 09:20 UTC |
| Depot | Name | OS | Size | Download | Public manifest | Notes |
|---|---|---|---|---|---|---|
| 4086591 | windows | 1.92 GB | 1.02 GB | 18744512914953397 |
A build is one published version of the game's files on a branch. Steam assigns a new build ID every time the developer pushes an update, so this list is the update history of the app. The files inside a build (depot manifests) are only readable with an account that owns the game, which SteamRaw does not have yet, so build contents are not shown.
| Build ID | Branch | Updated | First seen |
|---|---|---|---|
| 25269261 | public | 12 September 2026 09:20 UTC | 2 hours ago |
| 25266256 | public | 12 September 2026 02:44 UTC | 8 hours ago |
Every appinfo change SteamRaw has observed, grouped by changelist. Tags, features, languages, builds, depots, prices and any other key Steam publishes. Tracking since at least 12 September 2026 02:45 UTC (estimated from the earliest recorded change; the exact first fetch was not stored).
| Change | Old | New |
|---|---|---|
| Branch public timebuildupdated | 1789181008 | 1789204760 |
| Build time on branch public | 12 September 2026 02:44 UTC | 12 September 2026 09:20 UTC |
| Build on branch public | 25266256 | 25269261 |
| Depot 4086591 download (public) | 1,100,565,568 B | 1,100,441,168 B |
| Depot 4086591 size (public) | 2,058,059,382 B | 2,058,084,057 B |
| Depot 4086591 manifest (public) | 7578211926441086036 | 18744512914953397 |
| Changelist | Apps | Packages | Seen | What changed | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 38815555 | 1 | 2 hours ago | 6 changes | ||||||||||||||||||||||
| |||||||||||||||||||||||||
| 38813872 | 1 | 4 hours ago | no key changes captured | ||||||||||||||||||||||
| 38811008 | 1 | 8 hours ago | no key changes captured | ||||||||||||||||||||||
Fixed compatibility issues with existing mods.
I. New AI Assistant FeatureA new AI Assistant has been added. You can access it via the top menu bar: Help → AI.The AI can:Answer your questionsHelp you operate the editorHow the AI WorksThe AI consists of two components:AI Smart Router – The central dispatch hub. It receives your messages, intelligently selects which AI service to use for replies, and operates the tools you provide to complete tasks.Local Inference Engine – Runs AI models directly on your own computer. No internet connection required, protecting your privacy.Both components are optional, resulting in four possible combination
1. Custom Snap PointsYou can now create custom snap points to which objects will automatically align. To set one up:In the Data Panel, select the snap table and click Create Table;Add at least one snap point type;Drag the snap point onto the table – a small green dot will appear at your cursor position.Any snappable object entering the minimum snap radius will then automatically snap to that point. This is especially useful for arranging pieces like chessmen in neat formations.Snap points support the same full set of interactions as cards and pieces, including dragging, flipping, rotating, cop
1. New Leaderboard FeatureA new leaderboard feature has been added to encourage users to create and share custom content.You can access this panel via the top menu bar: Window → Ranking.The scoring rule is:Influence Score = Subscriptions × 30 + Followers × 10 + Favorites × 5 + Views × 1(based on items uploaded to the Workshop by the user)2. New Recording FeatureA new recording feature allows you to capture real-time software footage and supports saving highlight replays.You can find it via the top menu bar: Tools → Replay.How to use:Click the Record button to start recording.While recording, c
I. Added more right-click menu optionsRight-click on a card → Select In Hierarchy – automatically finds and selects it in the Hierarchy panel.Right-click on a card → View In Inspector – allows you to view and modify it in the Inspector panel.The Transform Component and Rigidbody Component in the Inspector panel let you directly modify the card's position, orientation, rigidbody parameters, and more.II. Added custom code templatesThe code editor now supports custom template functionality:Click the More (three dots) button in the upper right corner → Script Templates – this opens the code templa
I. New Custom Card Shader FeatureUsers can now add dynamic visual effects to cards using the custom card shader feature.How to UseOpen the Data panel (Window → Data), select the Card Table, and drag the desired card to the desktop.Right-click the card and select Edit Card Front.Adjust the dynamic effects in the Shader panel.Save.TexturesMain Texture refers to the card's front artwork. You can import your own custom illustration.Mask is an image used to separate the different layers of the main texture.The mask is painted across four layers, corresponding to the RGBA channels:R – Foreground lay
English localization has been improved. The new version now has approximately 90% English coverage, covering nearly all in-game scenarios. The remaining untranslated content is mainly limited to Debug information in the editor.Additionally, we have added a quick language-switching dropdown at the bottom of the navigation interface, allowing you to switch to your preferred language at any time.We have also posted some new Chinese tutorials in our official QQ Guild. You can find them quickly via the link below.You can also find the guild link on the Steam store page, or via the in-app menu at th
To help first-time users quickly get familiar with the software layout and usage, we have introduced a navigation feature. The navigation interface will automatically appear when your project loading path is empty, providing quick-access buttons to help you jump directly to the desired functions.For more information about each module, please refer to the documentation under Main Menu → Help → Documentation.As the software is currently undergoing rapid iteration, the documentation may occasionally fall out of sync with the actual content. If you have any questions or encounter any issues not co
New Achievement System: We have added an achievement system to the game. A special hidden achievement has been created exclusively for our launch players. We also plan to introduce more new achievements in future updates.New Card Placement System: You can now drag cards or decks directly from the data manager and place them freely onto the tabletop in the main menu interface. Use left-click to drag and move individual cards, or drag a selection box to select multiple cards for batch operations.Shortcut Keys:G – Stack into a pileSpace – Arrange into a square formationT – Tap / Untap (rotate to
Streamlined the game login process and added more detailed error messages. The software now supports offline use, with the online status displayed in the lower-left corner of the main interface. When offline, the status indicator appears in orange and can be clicked to attempt switching to online mode; when online, the indicator turns bright blue. If the switch to online status fails, detailed information will be output at the bottom of the interface and in the console. If you encounter login issues, you can try to resolve them based on the console messages; if the problem persists, feel free
Underlying Architecture Completely OverhauledNumerous Known Bugs Fixed
Updates:Added scripted battle functionality.Fixed various known issues.
New:Added custom mouse hover tooltip feature.Updates:Optimized data browsing experience.Fixed several known bugs.
New Features:Added debug functionality to the battle interface.Improvements:Enhanced the right-click menu functionality.Improved the layout functionality.Reorganized the categories in the top menu bar.Fixes:Resolved various known issues.
The editor interface has been completely revamped, with several new functional modules added.Cheers~
Full appinfo as delivered by Steam PICS, changenumber 38815555. Also at /api/app/4086590/raw.
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