The purpose of the article is to substantiate the expediency of game modeling in the process of teaching students professionally significant speech genres of role-playing expert behavior. Expert speech behavior in the article is understood as participation in communicative interaction in order to form a structured view of an event in the addressee based on its scientific explanation. A characteristic feature of expert speech behavior is the integration of special knowledge and social orientation. The authors clarify the traditional structure of communicative situations of professional communication, highlighting in them the task of modeling the social behavior of the addressee and the expert image of the author of the speech. Based on the methods of content analysis of professional statements, modeling of situations of expert communication, and expert assessments, the authors of the article substantiate the importance of introducing into the educational process gamification techniques that allow creating game conditions for the role-based problem solving, motivating students to choose an expert role (provocative prescription techniques, creating unstable communicative situations, specifying the image of the addressee, organizing an unsigned polylogue, etc.). These techniques make it possible to include special microgenres in the speech behavior of future specialists that were not previously noted in the special literature: the statement of special communication conditions, the forecast of variable development of events, algorithmizing of the social behavior of listeners, etc., which increases the interactivity of the simulated situation of professional communication (the main condition for improving the effectiveness of professional speech behavior). © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.