During October 2025, Say521 focused on improving asset loading reliability in the EsotericSoftware/spine-runtimes repository for Phaser-based game projects. They addressed a persistent bug involving atlas page URL duplication when using the file:// protocol with a baseURL in Phaser 3 and 4. By leveraging TypeScript and aligning the fix with Phaser’s internal logic, Say521 used file.url to determine the atlas base path, which prevented loading errors and reduced runtime failures. This targeted bug fix enhanced cross-version compatibility and minimized support issues, demonstrating a deep understanding of game development workflows and the intricacies of asset management in Phaser environments.