In July 2025, Mace developed and delivered the New Shuttle: Turncoat feature for the ARF-SS13/coyote-frontier repository, focusing on game development and level design. The work involved creating a complete map layout, defining shuttle entities, and specifying core properties such as name, description, price, and class, all managed through YAML configuration. Mace also implemented supporting user interface adjustments and extended the cargo bay to enable seamless shuttle operations. All changes were consolidated into a single, well-documented commit, ensuring traceability and ease of rollback. The project demonstrated depth in configuration management and thoughtful integration of new gameplay elements without bug fixes.