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In short
Card Engine is a flexible, extensible collectible card system for Garry's Mod. Add trading-card collecting, booster packs, and persistent player collections to any gamemode via expansion packs, complete with an admin panel and SQLite/MySQL support.
Card Engine is a complete collectible card framework for Garry's Mod that goes far beyond a simple card prop. It's a full-featured trading-card engine for building an entire collecting, pack-opening, and trading experience, complete with persistent player collections, an extensible expansion-pack system, and extensive customization options.
Card Engine ships without any cards of its own: it's purely the engine. To see cards in-game, install one of the free available expansion packs (or build your own using the included tools and documentation) and plug it in.
Collectible Cards
✔️ Flexible 2D/3D rendered cards with an optional holographic shimmer effect (holo/foil)
✔️ Multiple card sizes/aspect ratios: Common, Common Rounded, Japanese, Japanese Rounded
✔️ Freeform Attributes system for rarity, filtering, and custom metadata per card
✔️ Card conditions/modifiers (Mint, Near Mint, Excellent, Good, Lightly Played, Played, Poor)
Booster Packs
✔️ 3D world-model booster packs with configurable front/rear art
✔️ Weighted slot odds system (attribute weights, rarity weights, required attributes, duplicate prevention)
✔️ Fully configurable per booster, so no two packs have to behave the same
Player Collections
✔️ Persistent player collections with quantities and stacking
✔️ Built-in Collection Menu with filtering, search, and pagination
✔️ World-drop trading: players can physically drop cards and boosters for others to pick up
Card Art Tooling
✔️ Standalone web-based Card Generator for producing holographic card textures without image-editing software ( » Try it now! )
✔️ Paint.NET templates and full tutorials for creating your own card and booster art
✔️ Flexible art hosting: FastDL, Steam Workshop, or lazy remote loading (e.g. Cloudflare R2 or any static host) so art downloads on-demand per card
✔️ Card Engine ships without any cards of its own: install an expansion pack to add content.
✔️ Simple API for registering your own expansion sets, cards, boosters, and languages
✔️ Official expansion template repository with a setup wizard and PNG → VTF art conversion tooling
✔️ Example/demo expansions available to learn from and build on top of
See our list of Expansion Packs for expansion packs available free of charge.
Admin Panel
✔️ In-game Admin Panel (card_engine_admin) for managing players' collections and data
✔️ Works for both online and offline players
✔️ Grant, take, or revoke cards and boosters; edit card conditions; manage arbitrary player data
Database & Config
✔️ Database Integration: persistent player data storage with SQLite or MySQL backends
✔️ Extensive ConVars for server customization, including a Settings tab in the Admin Panel
✔️ Rebindable keybindings for in-game actions
Multi-Lingual Interface
✔️ Easily add or modify languages
✔️ Set a default language; users can override their own
✔️ Included languages: English, Dutch and German
✔️ Free example addon for integration with DarkRP included in documentation.
✔️ Free example plugin for integration with Helix included in documentation.
✔️ Extensive API Documentation: well-documented functions and libraries
✔️ Modular Design: reusable VGUI building blocks (Card2D, Card3D, CardGrid, CardList) to build entirely custom Collection Menus
✔️ Three built-in UI skins (gradient, minimal, outlined), or bring your own
✔️ Future-Proof: extensible architecture supports new card types, mechanics, and expansions over time
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