The presented paper attempts to elaborate on the topic of computer games modding as an example of specific fan-activity. 1) We draw on Jenkins' definition of convergence culture and 2) attempt to introduce a short genealogy of modding, and in the last part 3) offer an interpretative overview of game-modding from a structural and cultural (social or community) perspective. As a result, we understand modding as a productive activity that has the potential to deterritorialize structures of given material (original game) and contributes to the transformation of the video game industry.