Just finished the prototype of my HTML5/Canvas implementation of a visual novel engine. The actual script exists behind the scenes on a REST like web service (to act as a sort of drm). The assets for the game and UI layouts are stored in what I call a shit file. Their is s a utility called the shitpacker that creates a shit file from a directory structure. The name of my engine is the Pyst engine. Pyst stands for Python Stub...as the game script is actually a subset of Python that I created. Eventually I will probably move Pyst to JS so I could hypothetically support offline games.