Developed comprehensive automated QA test coverage for the Electric Blast Furnace multiblock structure in the GT5-Unofficial repository, focusing on structure formation, deformation, and recipe execution under varying heat and energy conditions. Leveraged Java and the Horizon QA framework to implement tests that validate both standard and edge-case behaviors, such as handling insufficient or full output buses. This work enhanced the reliability of high-impact game machinery by integrating robust automated validation into the continuous integration pipeline. The approach reduced manual QA overhead and improved release confidence, demonstrating strong skills in automation, game development, and testing within a complex modded environment.