Game Ωf Resistance is an educational game that aims to teach its users to quickly determine the resistance by the colours of rings on the resistor. A resistor is a basic electronic component that contains colored rings. Each colour represents one number, and their combination according to certain rules can determine the resistance without a need for a measuring instrument. The rules of calculation are easy to learn, but difficult to practice. App displays a resistor with randomly generated colours on the screen, and the user’s task is to enter the resistance value within a given time frame. In this way, the user learns through the game to quickly determine the resistance without a measuring instrument, which helps him work. The application is intended for students, pupils and all other electronics technicians who encounter resistors on a daily basis.