Муха - тренировка внимания is an Android puzzle game developed by Dmitriy Successon. It is a well-known exercise for developing concentration and focus. The game is recommended for children who have difficulty with spatial orientation and dysgraphia. The game requires constant attention and focus as you mentally move the fly around the field according to voice commands. If you get distracted or think about something else, you will lose the fly and have to start the game again. After the game time is up, you must click on the cell where the fly was located. If you answer correctly, the field size will increase, and if you answer incorrectly, it will decrease. Settings allow you to add difficulty. In-game mode, the fly is invisible, and in training mode, the fly does not disappear. This game is a great tool for developing cognitive functions such as memory, attention, and concentration.