Monster Mash is a new sketch-based modeling and animation tool that allows users to quickly sketch a character, inflate it into 3D, and animate it. The tool offers three basic modes of creation: Draw, Inflate, and Animate. In the Draw mode, users can sketch a character part by part using strokes that delineate boundaries of individual regions. The tool automatically connects the regions smoothly. Users can also select and duplicate regions, as well as delete them. In the Inflate mode, users can preview the resulting 3D model and interact with its parts by rotating or panning. The Animation mode allows users to animate the model by placing control pins on it and moving them around. Multiple control pins can be recorded in time to create more complex animation. The tool also offers a Redraw mode, which allows users to alter the shape of existing regions without modifying their relative depth order.

Monster Mash is a web-based tool that can be accessed on any platform in a recent browser that supports WebAssembly and WebGL 1.0. It is recommended to use the tool on a tablet with a larger screen for the best experience, as the current user interface is not optimized for small screens. The tool can be controlled using a mouse, touch, or stylus, with a stylus on a tablet being the recommended input method.

Users can create, open, save, and export projects in Monster Mash. The tool starts with a new empty project, and users can open existing projects from their local hard-drive or load examples provided on the help page. Users can also upload a template image or a background image to use in their projects. The tool allows exporting the current animation frame as an OBJ file or exporting the entire textured animation as a glTF file.

In addition to the main features, Monster Mash also offers other settings, such as enabling/disabling experimental armpit stitching algorithm and normal smoothing of the resulting 3D mesh. The tool provides mouse buttons and hot-keys for convenient navigation and operation.

Please note that the information provided is based on the scraped website text and may be subject to change. For more detailed information and support, users can visit the Monster Mash website at [https://monstermash.zone/](https://monstermash.zone/).