Developed and delivered an online multiplayer turn time customization feature for the yairm210/Unciv repository, enabling players to set time limits for turns and manage pacing in multiplayer sessions. The work involved end-to-end implementation using Kotlin, with a focus on UI development and multiplayer game logic to ensure seamless integration and user experience. The developer conducted thorough code reviews, documented changes, and verified backward compatibility with existing save states, ensuring stability across versions. This feature enhanced the multiplayer experience by supporting fair play and predictable match durations, and demonstrated attention to code quality, collaboration, and compatibility throughout the development process.