ScriptableObject Communication Middleware: I architected a decoupled event bus utilizing Unity ScriptableObjects to serve as a communication layer between disparate gameplay systems. This middleware reduced direct dependencies between GameObjects, allowing designers to link complex behaviors directly in the Inspector without engineering intervention and significantly accelerating the iteration cycle.

Player State Machine: I implemented the primary functions for the player state machine to manage complex character behaviors and transitions.

Interaction Systems: I developed the interaction framework, ensuring a easily extendable expansion on more and more complex interaction in the latter development. 

Inventory System: I programed the inventory system that the individual items are collectable by the whole system, but also highly modifiable separately. It is designed for not only contributing to in-level usage, but also for managing translation, sending as rewards through mail, saving for long-term in the hub world (the main lobby), etc.

Extensible Level Architecture: I built modular level structures designed to maintain consistency across the project while remaining flexible enough to support unique, level-specific mechanics.

Level Minigames: I implemented multiple mini games across all three levels, modify and improve them based on the design needs.