Worked on the Rotwood-Vale/Ratwood-Keep repository, focusing on backend development and bug fixing within the DM language. Addressed two critical issues: restored test merge link behavior in Byond 516 to ensure links open in a new window, preserving chat history and preventing data loss during test interactions, and corrected crafting logic so that the last item from a bundle is properly returned or dropped, maintaining expected crafting flow. Demonstrated careful regression debugging and gameplay logic validation, with attention to compatibility across Byond versions. The work improved reliability of test workflows and enhanced user experience in crafting systems for game development.