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Design & ValidateToolOpen sourceFree
Decker
An open multimedia authoring environment inspired by HyperCard, combining cards, widgets, drawing, sound, and lightweight Lil scripts in a shareable file.
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Why it’s here
Narrative and systems designers can quickly assemble clickable toys, interface flows, and small games that run directly in a browser.
Best fit
Prototype systems, stories, and interactions, then validate them with real players.
prototypingnarrative-design
Before you commit
Its low-resolution aesthetic and compact runtime are intentional; complex 3D, online services, and large content pipelines are out of scope, and imported assets need their own licenses.
