To disclose the concept of game balance and to develop an approach to automate the routine when working with game economics, methods of data analysis and experimentation were applied. According to the results of the analysis of existing definitions, a special case of mathematical balance and a generalized design definition of game balance were singled out. By parsing the existing approaches for balancing and testing games, a vision of our own solution was developed. Based on the findings, an approach for automating balance within a game prototype generator has been proposed. As an intermediate result, an updated structure and operation procedure of the game prototype generation tool were presented. The prospects for further development in this direction are given.