The Squad-SDK is a software development kit that supports community-designed video games. Building with the Squad-SDK will let you build a game that allows community created and curated components, formats, and other elements inside your game. With the SDK, a game's community can 1) submit game elements, 2) buy them, 3), curate them (via curation markets), and 4) license and profit off their contributions.
The SDK is currently implemented only in Javascript.