December 2025 (OpenTTD/OpenTTD) — Key feature delivered: Pause-State Screensaver Management, enabling the computer to sleep while the game is paused to maintain uninterrupted gameplay and optimize energy use. The change aligns screensaver/sleep behavior with the game's pause state and reduces manual work for players during long sessions. Commit c918a29e4960c1081a67ed5889e942ee9761f420 addresses Fix #12937. Impact: improved user experience and reliability during paused gameplay, better energy management, and smoother cross-platform behavior. Technologies/skills demonstrated: platform idle-state handling, pause-state event integration, C/C++ codebase changes, and rigorous version-control workflow.