# Playable Papers > A collection of browser audio toys, each built around one mechanism. Each > toy carries a markdown spec written so an agent can rebuild the mechanism > from it alone, in another language, another audio framework, or hardware. > Licence: CC0. ## Specs - [motif-memory](toys/motif-memory/spec.md): Memory is a state of a voice, not a structure beside the ensemble. - [markov](toys/markov/spec.md): A first-order chain gives every state exactly one future — a local grammar, and no phrase. - [statistical-feedback](toys/statistical-feedback/spec.md): Dice have no memory, and the ear hears the difference. - [possibles](toys/possibles/spec.md): Existing and mattering are different questions, and an instrument can let you answer them one at a time.