Developed and delivered the Oddity Items Expansion for the Monkestation/Monkeris repository, introducing three new in-game items with unique effects and player interactions. Leveraging skills in game development and object-oriented programming, the work focused on expanding the item ecosystem through robust, data-driven item definitions and associated game logic. Implemented in DM, the feature enhanced gameplay depth by enabling new item behaviors and interactions, laying groundwork for future content and monetization opportunities. The approach emphasized maintainability and traceability, linking code changes directly to feature delivery. No bugs were fixed during this period, with all efforts concentrated on feature development and ecosystem enrichment.