SLUDGE has a whole bunch of parts to it, but it can be simplified into just 2 story-telling ideas and 3 major types of visual content.

The storytelling ideas are Scenes and Moments.

• Moment : Any arrangement of text and other content on the screen. Moments are played in order, and can be used to create sequential dialog between several characters, or a short animated sequence.
• Scene : A set of moments. A scene may link to any other scene, so you can assemble parts of your game's dialog as you need.