The main advantage over other ways of using Ciao is that the playground does not require any installation or interaction with a server since everything runs within the browser.
These documents can be developed with many tools, such as Google Docs, Jupyter notebooks, Word, Powerpoint, LaTeX, Pages, Keynote, web site generators, etc., etc.
The examples are stored in the documents themselves and do not need to be uploaded to (or edited in) any server.
The Playground can be specialized to create standalone web-based applications, with editor and top level, which also do not need installation, running fully within the user's browser. An example is the s(CASP) playground.
The Ciao Playground is based on a web-based editor component and the wasm build grade of Ciao (using WebAssembly and compiled with Emscripten).