Problem statement. One of the priority tasks of modern society is the creation of conditions conducive to the upbringing and development of a creative personality. The computer science course has a didactic potential in terms of the formation of initiative, independence, imagination, the ability to set and solve problems. The presented study aimed at substantiating the effectiveness of game mechanics use in teaching computer science to solve the problem associated with the need to develop the creative thinking of students. Methodology . The mechanics “Achievement,” “Reckoning on trust,” “Fun once - always fun,” “User progress” are implemented with game elements and methods in the study of theoretical computer science. Resources of digital services (interactive whiteboards, random selection generators) are used for gamification. The base of the experiment is a secondary school with in-depth study of individual subjects in the Stulovo village (Slobodskoy district, Kirov region). The study covered 74 students of the seventh grade (64% - girls and 36% - boys). The average age of the respondents is 13 years. Statistical processing of the results was performed using Pearson's chi-squared test. Results. During the game, students study theoretical material, solve a system of creative and non-standard tasks on the topic “Measurement of information.” For each game mechanic, a goal, tasks, sets of rules and restrictions are defined. Statistically significant differences in the qualitative changes that have taken place in the system according to the levels of development of creative thinking are identified. Conclusion . The features of the presented version of the application of game mechanics in teaching computer science in terms of the development of creative thinking are described: taking into account the age characteristics of students when formulating message texts, inclusion of digital services, combination of oral and written speech with interaction on a computer network.