Alexander Astafiev developed Esperanto localization for the luanti-org/luanti game UI, focusing on translating core interface strings and player-related messages to enhance accessibility for Esperanto-speaking users. He utilized Weblate to manage the translation workflow, achieving 71.9% coverage by translating 1,052 out of 1,463 PO file strings. His work established a foundation for broader multilingual support and improved onboarding for new players. Alexander applied his skills in game development, localization, and translation, integrating the new language layer without introducing major bugs. The depth of his contribution lies in the thoroughness of the translation and the integration of localization infrastructure.