Various methods for creating interesting games are used in the development process. Because the
empirical part is difficult to measure and analyze, it usually only measures and analyzes the parts where
data are easy to quantify. This is a clear limit to the fact that the experience of the game is important.This study proposes a system that recognizes the face of a game user and measures the emotion
change from the recognized information in order to easily quantify the experience of the user who is
playing the game. The system recognizes emotions and records them in real time from the face of the user
who is playing the game. These recorded data include time and figures related to the progress of the
game, and numerical values for emotions recognized from the face. Using the recorded data, it is possible
to judge what kind of emotion the game induces to the user at a certain point in time. Numerical data on
the recorded empirical part using the system of this study is expected to help develop the game according
to the developer 's intention.