Informal settlements have become dominant forms and processes of urban development in many cities, yet the task of helping students engage with design issues in such contexts is fraught with difficulties of access, safety, and complexity. Drawing on detailed fieldwork, this article explores ways in which informal settlement formation can be taught in design studio through the use of games that simulate incremental practices of room-by-room accretion and prospects for transformation. The pedagogical goals are to effect a blurring of authorship and authority, to undermine top-down thinking, and to nourish forms of design imagination that unite process and form.