The functionality of this Unity grey box is perfectly demonstrated, and the core gameplay is basically implemented, which can already meet the needs of the task; however, the following areas need further improvement: 1. the design of the buttons is rather cluttered and they are not uniform and aligned; 2. the poor choice of colours makes it difficult to read the characters; 3. the effects of the buttons are not uniform (e.g. the effects of turning left and right are not the same).