This final thesis describes the process of creating the computer game "Color Sorting Game" for testing and practicing color shade recognition. The architecture of the game will be presented, along with the implementation of the main game code using JavaScript and Phaser.js. The process of game testing and the evaluation of the obtained results will also be described. Conclusions about the achievements and possibilities for further game development will be drawn at the end of the thesis. The first part of the thesis will focus on reviewing the technologies that will be used in the game development, as well as human visual color perception and sensitivity testing to color shades. The idea for creating the Color Sorting Game was inspired by researching the Farnsworth- Munsell 100 Hue test, which is used to assess visual abilities. The test involves sorting colors according to their spectral order. Inspired by this idea, the author of the thesis has created a game in which users sort colors to develop and improve their visual abilities. The Color Sorting Game allows users to have fun while simultaneously training their visual perceptual skills. Through a combination of gameplay, challenges, and visual elements, users can test and enhance their color discrimination abilities. During the game development, special attention will be given to the user interface to ensure intuitiveness and ease of use. The game will include different levels, gradually increasing in complexity, allowing users to continuously progress in their color shade recognition skills. Additionally, the possibilities for game personalization, such as adjustable difficulty settings or extra challenges for advanced users, will be explored. The goal of this thesis is to provide a comprehensive insight into the process of creating a computer game for testing and practicing color shade recognition while highlighting the importance of visual color perception.