The Diffusion Game is a refinement of the Change Agent Game, a paper and pencil game developed by Everett M. Rogers (Copyright 1970 and 1972). It was modified and adapted to the computer by Charles B. Weinberg with the assistance of Roberto Mendez and David Rothschild at Stanford University. It was jointly copyrighted (1977 and 1981) by the President and Fellows of Harvard College and the Board of Trustees of the Leland Stanford Junior University (Christopher H. Lovelock, Harvard University; Charles B. Weinberg, University of British Columbia).

This current algorithmic implementation of the game (Copyright 2001) was written by Scot Hoffman and revised by Paul Murphy, with the permission of Charles B. Weinberg. It has been used by students taking the Sociology of Technology course at Iowa State University under the direction of Stephen G. Sapp, who has provided permission for use by UCSB Comm 163 students. This current web-based implementation was developed by James Kinneavy. Please do not copy the program or distribute it or the URL to others.