Rockburst, a critical challenge in underground geotechnical engineering, has made rockburst grade evaluation a pivotal research focus. To accurately assess rockburst grades in underground excavation projects, this study proposes a rockburst grade evaluation system based on a game-optimized radar chart. First, an evaluation system for rockburst was established using rock brittleness coefficient o,/o,, stress coefficient o /o,, elastic strain energy index W.,. rock mass integrity coefficient K,, and burial depth h. Grade classification standards for these indicators weredefined. Subjective and objective weights were calculated using an improved analytic hierarchy process and the CRITIC method, respectively, with combined weights determined via game theory. By integrating radar chart principles and optimized radar chart, a characteristic vector evaluation function range for different rockburst grades was developed. The rockburst grade of a sample was then evaluated based on the magnitude of its radar chart characteristie vector evaluation function. To validate the model's effectiveness and reliability, it was applied to analyze rockburst cases during mining operations at the Dongshan Copper Mine. Results demonstrate that the evaluation outcomes based on game-opti-mized radar chart align with actual rockburst grades, confirming the rockburst grade evaluation model 's practicality.