This document provides an overview of an introductory course on game modding. The goals of the course are to understand game production processes, development practices, multimedia aspects like graphics and sound, user experience evaluation, and applying modding techniques to design game levels. The course units cover the history of modding, planning, tools, storycrafting, level design, implementation, testing, and a final presentation. Early examples of mods discussed are Ms. Pacman and Castle Wolfenstein. Students will complete assignments playing and reviewing Skyrim and participating in a video and survey.