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Boss Key
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.

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Features
Single-player
Online PvP
Steam Workshop
Steam Cloud
Includes level editor
Family Sharing
Profile Features Limited 
Requires agreement to a 3rd-party EULA
Languages:
Interface Full Audio Subtitles
English ✔ ✔ ✔
Simplified Chinese ✔ ✔ ✔

Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“BOSS KEY is not only a card game but also a card game editor. Therefore, we need extensive user feedback to optimize functionality and ensure the software progresses in the right direction.”

Approximately how long will this game be in Early Access?

“We expect this process to last until the software’s functionality satisfies most users—approximately one to two years.”

How is the full version planned to differ from the Early Access version?

“We plan to support more card game genres, provide richer customization options, create more detailed software tutorials, enhance visual effects, fix bugs, and add support for more languages.”

What is the current state of the Early Access version?

“Currently, the software is already functional for creating classic CCG/TCG games. We have also included official examples in the 'Workshop', allowing users to directly engage in classic CCG/TCG battles. This helps users get a preliminary understanding of the software’s capabilities or create custom content based on these examples.”

Will the game be priced differently during and after Early Access?

“We plan to gradually increase the price as new content and features are introduced.”

How are you planning on involving the Community in your development process?

“For Chinese users, we have established a QQ group for discussions. Non-Chinese users can provide feedback or suggestions through the Steam Community discussion board."”
Read more

Join the Boss Key Playtest

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This game is not yet available on Steam

Planned Release Date: To be announced

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About This Game

【Game Introduction】

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.

【Target Audience】

  • Card game enthusiasts who enjoy creating and playing with DIY content.

  • Independent card game developers, designers, and small-scale development teams.

【Key Features】

This software is a one-stop development solution tailored for card games. We've packaged underlying technical complexities into intuitive visual modules, empowering you to bring your ideas to life easily:

  • Rapid Prototyping: Design and create cards in minutes, with no programming knowledge required.

  • Deep Customization: Freely define card attributes, skill logic, game modes, and even entirely new rules.

  • Instant Testing & Validation: Automatically build game logic based on your configured data and test gameplay directly within the software.

  • Seamless Content Sharing: Share your creations and gather immediate player feedback through the integrated Steam Workshop, enabling continuous iteration.

  • Full Technical Enablement: Access source code licensing and technical support to significantly reduce development costs and cycles, making it exceptionally friendly for individuals and small teams.

【Core Modules】

  • Card Editor
    Comprehensively edit all aspects of your cards, including skills, art assets, sound effects, and more, supporting highly customized card creation.

  • Data Manager
    Centrally manage various structured game data across multiple dimensions, including game modes, arenas, expansions, classes, races, factions, skills, trigger conditions, and level design.

  • Steam Workshop Integration
    Easily publish, subscribe to, and rate community content, fostering a vibrant creator ecosystem.

【Version Information】

  • Beta Version (Free)
    Access and help test the latest in-development features. Please note this version may undergo periodic data resets and its content is subject to change.

  • Full Version (Paid)
    Provides a complete, stable game and editor experience, including all creation features and eligibility for ongoing updates.

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 / 11 (64-bit)
    • Processor: Intel Core i3-4130 or AMD FX-4350
    • Memory: 8 GB RAM
    • Graphics: Intel HD Graphics 4600, NVIDIA GeForce 710, AMD Radeon R5 230 (OpenGL 3.2 Support)
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 8 GB available space
    • Sound Card: DirectX Compatible
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 / 11 (64-bit)
    • Processor: Intel Core i5-7500 or AMD Ryzen 3 1200
    • Memory: 16 GB RAM
    • Graphics: NVIDIA GeForce GTX 650 Ti, AMD Radeon HD 7850 or better
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 16 GB available space
    • Sound Card: DirectX Compatible
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